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. 2023 Jul 3;55(8):1168–1183. doi: 10.3724/abbs.2023107

Table 1 The role of m 6A in processes associated with cellular senescence

Cellular senescence pathways

m 6A-related molecules

Expression

m 6A level

Main functions

Cell type

Ref.

Oxidative stress

YTHDF

Elevated

Unchanged

Promote the formation of stress particles

Human osteosarcoma cells

[43]

FTO

Elevated

Reduced

Increase expression of superoxide dismutase, catalase, and quinone oxidoreductase

Bovine granulosa cells

[44]

METTL3/14

FTO

Elevated

Reduced

Elevated

Promote glutathione expression

Human keratin-forming cells

[45]

DNA damage

METTL3

Elevated

Elevated

Repair DNA damage caused by UV exposure

Human osteosarcoma cells, melanoma cells, hele cells

[46]

ALKBH5

Reduced

Elevated

Protect cells from DNA damage

Human embryonic kidney 293 cells

[47]

METTL3

Elevated

Elevated

Recruit RAD51 and BRCA1 to the DNA break to help with DNA repair

Human osteosarcoma cells

[48]

Telomeres

METTL3

Elevated

Elevated

Inhibit telomere recruitment and regulates telomere length

Human hepatocellular carcinoma cells, human non-small cell lung cancer cells, human prostate cancer cells

[49]

ALKBH5

Elevated

Reduced

Remove m 6A from telomerase mRNA to facilitate telomerase breakdown

Human embryonic kidney 293 cells

[50]

METTL3

Elevated

Elevated

Enhance PARP1 stability and maintains telomere integrity

Gastric cancer stem cells

[51]

SASP

METTL3

Elevated

Elevated

Reduce levels of pro-inflammatory cytokines, such as TNF

Macrophages

[ 52, 53]

IGF2BP2

Elevated

Unchanged

Promote IL-17 expression

Mouse embryonic fibroblasts

[54]

METTL3

Elevated

Elevated

Promote the activation of the TRAF6-NF-κB pathway to promote secretion of pro-inflammatory cytokines, such as IL-1β, IL-6, TNF-α and IL-18

Microglia

[55]