Vitamin C
https://lpi.oregonstate.edu/mic/vitamins/vitamin-C
Vitamin C and Immune Function
https://pmc.ncbi.nlm.nih.gov/articles/PMC5707683/
Vitamin C: One compound, several uses. Advances for delivery, efficiency and stability
https://www.sciencedirect.com/science/article/pii/S1549963419302011
Vitamin C Promotes Epidermal Proliferation by Promoting DNA Demethylation of Proliferation-Related Genes in Human Epidermal Equivalents
https://www.sciencedirect.com/science/article/pii/S0022202X25004166
Link between aldehydes and premature aging revealed
https://www.news-medical.net/news/20240412/Link-between-aldehydes-and-premature-aging-revealed.aspx
Formaldehyde and De/Methylation in Age-Related Cognitive Impairment
https://pmc.ncbi.nlm.nih.gov/articles/PMC8231798/
Study reveals how formaldehyde alters gene expression through epigenetics
As an overview of the research, Dr. Esteller points out that "we have discovered that formaldehyde is an inhibitor of the MAT1A protein, which is the main producer of S-Adenosyl-L-Methionine (SAM) and this last molecule is the universal donor of the chemical group "methyl" that regulates epigenetic activity. Specifically, we found that exposure to formaldehyde induced a reduction in SAM content and caused the loss of methylation of histones, proteins that package our DNA and control the function of thousands of genes".
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The ascorbate biosynthesis pathway in plants is known, but there is a way to go with understanding control and functions