Association of Parvovirus B19 Serostatus with Elevated Serum Levels of Soluble Killer-cell Immunoglobulin-like Receptors (sKIR) in a Diverse Oncogenic Cohort: An Exploratory Cross-Sectional Study
الباحث الأول:
Zainab A.A. Zwain
الباحثين الآخرين:
Saif J. Yasir
المجلة:
The Egyptian Journal of Medical Microbiology
تاريخ النشر:
1 إبريل، 2027
مختصر البحث:
The intricate relationship between viral persistence and human oncogenesis represents
one of the most complex paradigms in contemporary immune-oncology, Where it is
well-established that approximately 15% - 20% of global malignancies are
attribut…
The intricate relationship between viral persistence and human oncogenesis represents
one of the most complex paradigms in contemporary immune-oncology, Where it is
well-established that approximately 15% - 20% of global malignancies are
attributable to viral etiologies, where pathogens do not merely act as transforming
agents but also function as potent modulators of the Tumor Microenvironment (TME)¹
Beyond direct genomic instability, persistent viral infections often orchestrate a state
of chronic inflammation and metabolic perturbation, ultimately facilitating immune
subversion-a process by which the host’s defensive mechanisms are co-opted or
suppressed to allow malignant progression²..
Among the emerging viral candidates in this field is Parvovirus B19 (B19V), a small
DNA virus traditionally associated with benign hematological conditions, However,
emerging evidence suggests that B19V can establish lifelong persistence in various
peripheral tissues and bone marrow, potentially serving as a chronic stimulus for
immunological remodeling³. While the pathogenic role of B19V in autoimmune and
inflammatory disorders is recognized, its specific influence on the specialized
receptors of the innate immune system within a malignant context remains largely
unexplored⁴.
Central to the innate anti-tumor response are Natural Killer (NK) cells, whose
cytolytic efficacy is strictly regulated by a diverse repertoire of surface molecules,
most notably the Killer-cell Immunoglobulin-like Receptors (KIR)⁵. These receptors
provide critical inhibitory or activating signals that maintain immunological
homeostasis, However, the pathological upregulation of inhibitory KIRs can lead to
immune exhaustion, where NK cells fail to recognize and eliminate transformed
cells⁶.The hypothesis that viral pathogens like B19V may correlate with altered
systemic levels of soluble KIR, potentially reflecting a state of immune
dysregulation⁷.
Despite the clinical significance of these pathways, there is a distinct lack of
quantitative data correlating specific B19V serostatus (active IgM versus chronic IgG
persistence) with systemic SKIR concentrations in cancer patients⁸. This study seeks
to address this significant gap in the literature. By evaluating a substantial cohort of
N=200 patients, we aim to delineate the relationship between B19V seropositivity and
KIR-mediated signaling. Such an investigation is pivotal for "deciphering" the
mechanisms of immune escape and may provide the foundation for novel therapeutic
strategies aimed at restoring immune potency in virally associated malignancies.
