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After evaluating the peptide on aged cell cultures, the researchers apparently observed reduced senescence-associated staining and lower protein levels of p16, p21, and p53 in the remaining cell population, consistent with the removal of cells that highly expressed these markers

This mechanism initiates the intrinsic apoptosis pathway specifically in senescent cells, while healthy cells maintain different p53 regulation mechanisms and remain unaffected by the peptide administration

Second, the microneedle delivery data are in vitro on excised human skin

While peptides like BPC 157 are not yet FDA-approved, they are rapidly gaining popularity due to their effectiveness in clinical practice

Scellier, B