Tissue inhibitor of metalloproteinases 2 (TIMP2) is a gene and a corresponding protein. The gene is a member of the TIMP gene family. The protein is thought to be a metastasis suppressor. The proteins encoded by this gene family are natural inhibitors of the matrix metalloproteinases (MMP), a group of peptidases involved in degradation of the extracellular matrix. In addition to an inhibitory role against metalloproteinases, the encoded protein has a unique role among TIMP family members in its ability to directly suppress the proliferation of endothelial cells. As a result, the encoded protein may be critical to the maintenance of tissue homeostasis by suppressing the proliferation of quiescent tissues in response to angiogenic factors, and by inhibiting protease activity in tissues undergoing remodelling of the extracellular matrix. TIMP2 functions as both an MMP inhibitor and an activator. TIMPs inhibit active MMPs, but different TIMPs inhibit different MMPs better than others. For example, TIMP-1 inhibits MMP-7, MMP-9, MMP-1 and MMP-3 better than TIMP-2, and TIMP-2 inhibits MMP-2 more effectively than other TIMPs.
Background References
1. Tang J et al. TIMP2 ameliorates blood-brain barrier disruption in traumatic brain injury by inhibiting Src-dependent VE-cadherin internalization. J Clin Invest. 2023 Nov
2. Ferreira AC et al. Neuronal TIMP2 regulates hippocampus-dependent plasticity and extracellular matrix complexity. Mol Psychiatry. 2023 Sep
Western blot analysis of TIMP2 on different lysates with Rabbit anti-TIMP2 antibody (HA723358) at 1/2,000 dilution.
Lane 1: HeLa cell lysate Lane 2: Daudi cell lysate (negative)
Lysates/proteins at 20 µg/Lane.
Predicted band size: 24 kDa Observed band size: 21 kDa
Exposure time: 2 minutes; ECL: K1801;
4-20% SDS-PAGE gel.
Proteins were transferred to a PVDF membrane and blocked with 5% NFDM/TBST for 1 hour at room temperature. The primary antibody (HA723358) at 1/2,000 dilution was used in 5% NFDM/TBST at 4℃ overnight. Goat Anti-Rabbit IgG - HRP Secondary Antibody (HA1001) at 1/50,000 dilution was used for 1 hour at room temperature.
Western blot analysis of TIMP2 on different lysates with Rabbit anti-TIMP2 antibody (HA723358) at 1/2,000 dilution.
Lane 1: SW480 cell lysate Lane 2: HeLa cell lysate Lane 3: COS-1 cell lysate
Lysates/proteins at 15 µg/Lane.
Predicted band size: 24 kDa Observed band size: 21 kDa
Exposure time: 1 minute; ECL: K1802;
4-20% SDS-PAGE gel.
Proteins were transferred to a PVDF membrane and blocked with 5% NFDM/TBST for 1 hour at room temperature. The primary antibody (HA723358) at 1/2,000 dilution was used in 5% NFDM/TBST at 4℃ overnight. Goat Anti-Rabbit IgG - HRP Secondary Antibody (HA1001) at 1/50,000 dilution was used for 1 hour at room temperature.
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