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Peptide Sciences Blog


Can viral replication be reduced with MOTS-c and FOXO4-DRI by killing zombie (senescent) cells?

By Nemo 2 months ago

Senescent cells increase replication of a DNA virus in vitro.

“A significant increase in viral replication efficiency was detected by replicative senescence during IFV and VZV infection. ... As one of possible mechanisms for the increase in viral replication in senescent cells, a reduction in interferon (IFN) response after viral infection may account for it.” (2)

The concentration of this DNA virus in senescent cells is 300% more infected than non-senescent cells.

300% increase of viral infection in senescent cells

"Similarly, Andrew et al. showed that by increasing SASP phenotype, MOTS-c could make senescent cells more easily detected and then cleaned by the immune system, thus protecting normal cells."

Potential Synergy of MOTS-c or Humanin with Senolytics

By Nemo 3 months ago

FOXO4-DRI senescent cell remover is potentiated by SASP factors

"SASP factors as IL-6 may be the cause for the observed loss in renal function, and we wondered how FOXO4-DRI would function under such high SASP conditions. In vitro experiments showed FOXO4-DRI to be more potent against senescent cells in which SASP wastransiently boosted by recombinant IL1a/b or lipopolysaccharide (LPS), whereas an IL1 receptor antagonist or the general anti-inflammatory drug cortisol reduced its potency (Figures 6H and 6I). Thus, FOXO4-DRI actually is most effective against senescent cells expressing high levels of SASP and could as such be particularly effective against loss of renal function. Excitingly, while not substantially influencing total body nor kidney weight (Figure S6G), FOXO4-DRI treatment normalized the percentage of tubular cells lacking LMNB1 (Figure 6G), the tubular IL-6 elevation (Figure 6J), and the elevations in plasma urea levels (Figure 6K)." (4)