Research Highlights mRNA COVID-19 Vaccine Effects: Spike Persistence, Brain MRI, Heart Cell Stress

Newly reported research on mRNA-based SARS-CoV-2 vaccines describes prolonged persistence of vaccine-derived mRNA and spike protein, no detectable microstructural brain changes in healthy adults, and stress responses in heart cells exposed to the vaccines in the laboratory.

In a formal research collaboration between Neo7Bioscience and the McCullough Foundation, researchers presented evidence of prolonged SARS-CoV-2 spike protein persistence from COVID-19 infection and mRNA vaccinations, linked to genomic instability, integration events, aggressive cancers, disabilities, and multi-system injuries. The referenced peer-reviewed studies document vaccine-derived mRNA, plasmid DNA (with SV40 elements), and bioactive spike protein persisting beyond 3.5 years, along with coordinated transcriptomic and proteomic reprogramming. One case report describes the first reported genomic integration of spike sequences in a human patient with rapidly progressive stage IV bladder cancer. Other studies cited include autopsy findings in cases of fatal COVID-19 vaccine-induced myocarditis and gene expression alterations induced by mRNA vaccines.

A separate prospective pilot study, published in Nature, tested whether lipid nanoparticle (LNP)-mRNA-based SARS-CoV-2 vaccination induces microstructural cerebral changes in healthy adults. Across 85 MRI scans from 29 initially seronegative adults scanned before and after vaccination with either BNT162b2 or mRNA-1273, the researchers observed no new or progressive white matter hyperintensities and no significant intraindividual qT1 changes. The authors concluded that there is no evidence for white matter hyperintensity progression or microstructural cerebral changes after LNP-mRNA-based SARS-CoV-2 vaccination in healthy adults in the subacute phase.

Another study, published in Frontiers in Immunology, examined the effects of the mRNA vaccines on human AC16 cardiomyocytes in vitro. The researchers found that both vaccines produced multiple intracellular spike protein variants and high-molecular-weight aggregates, triggering oxidative stress and IL-6 upregulation. mRNA-1273 generated approximately 5-fold more spike protein in AC16 cells than BNT162b2 and increased IL-6 expression 15-fold versus 1.7-fold with BNT162b2. The findings suggest that intracellular spike processing may contribute to cardiac cellular stress mechanisms relevant to rare cases of post-vaccine myocarditis. The researchers noted that myocarditis after mRNA vaccination remains rare, and COVID-19 infection itself carries a higher risk of heart complications.