Target intelligence / Profile preview

Inhibitor of growth protein 2 (ING2)

Target
ING2
Molecular classification
Transcription factor (chromatin modifier), Histone modification "reader" protein, Tumor suppressor protein
01

Overview

ING2 encodes a nuclear protein that binds to methylated histones (especially H3K4me3) via a plant homeodomain (PHD) zinc finger and is part of the mSin3A/HDAC complex involved in chromatin remodeling and gene repression. It functions primarily as a tumor suppressor by regulating transcription, apoptosis, cellular senescence, and DNA repair. ING2 modulates p53 function, is subject to dynamic regulation via phosphorylation and ubiquitination, and its loss or mislocalization is associated with tumorigenesis. ING2 is implicated in the development and progression of multiple cancers, including colorectal and gynecological cancers, and is being explored as a marker for tumor progression and as a potential therapeutic target through epigenetic and chromatin-targeting strategies.

Other names
ING1LING1Lpp33ING2Inhibitor of growth 1-like proteinp32inhibitor of growth family member 2ING2aING2b
02

Mechanism of action

Drugs may alter ING2 function by affecting HDAC/mSin3A complex activity or by targeting chromatin remodeling, though no specific ING2-targeted drug mechanism is validated yet.

03

Biological functions

Chromatin modification and remodelingDNA repairTranscriptional regulationCell cycle regulationCellular senescenceApoptosisTumor suppression
04

Disease associations

Cancer (tumor progression, suppression, context-dependent oncogenesis)Gynecological cancers (e.g., breast, ovarian, endometrial carcinoma)Colorectal cancer
05

Safety considerations

Potential challenges include off-target effects of chromatin-targeting drugs, impact on normal gene expression, and toxicity from altering tumor suppressor pathways
06

Interacting drugs

No approved drugs directly target ING2 to date. Research is ongoing on HDAC inhibitors, chromatin modulators, and other epigenetic therapies exploiting ING2 pathways.
07

Biomarkers

ING2 expression levels are investigated as biomarkers for tumor progression, prognosis, and possibly patient selection in several cancer types

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