Application of substance that reduces the content or activity of kat7 in preventing senescence and treating hepatic fibrosis

Any of the following methods:

• (i) a method in preparing a product for treating and/or preventing senescence;
• (ii) a method in preparing a product for inhibiting hepatic fibrosis.

Any of the following products:

• (v) a product for treating and/or preventing senescence;
• (vi) a product for inhibiting hepatic fibrosis.

A method for delaying and/or treating and/or preventing senescence, comprising the following steps:

• administrating a substance that reduces the content or activity of KAT7 or a substance that inhibits KAT7 gene expressions or knocks out KAT7 genes on an animal cell, a tissue, an organ or an individual, in order to delay and/or treat and/or prevent the senescence of the animal cell, the tissue, the organ or the individual.