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Related Concept Videos

Composition of Polyprotic Acid Solutions as a Function of pH01:19

Composition of Polyprotic Acid Solutions as a Function of pH

Polyprotic acids of the type H2M constitute two ionizable protons. As a result, on titration with a base, they exhibit two equivalence points in the titration curve. During titration, the species H2M, HM−, and M2− will be present in the solution at different points. The fractions of H2M, HM−, and M2− present at the various instances of the titration are denoted by α0, α1, and α2, respectively.
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Pharmacogenetics of Phase II Enzymes: N-acetyltransferase, Thiopurine S-methyltransferase, UDP-glucuronosyltransferase

Phase II biotransformation reactions are essential for detoxifying and eliminating xenobiotics, including many pharmaceutical compounds. These reactions typically involve conjugation, the covalent attachment of polar endogenous groups such as glucuronic acid, sulfate, methyl, or acetyl moieties to functional groups introduced during Phase I metabolism. The resulting conjugates are more water-soluble, enabling efficient renal or biliary excretion.The major classes of Phase II enzymes include...
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Indirect-acting cholinergic agonists work by interacting with an enzyme called acetylcholinesterase (AChE) in the synaptic cleft. They can be reversible or irreversible inhibitors and have different effects on the enzyme.
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Indirect-Acting Cholinergic Agonists: Chemistry and Structure-Activity Relationship

Indirect-acting cholinergic agonists are agents that interact with the acetylcholinesterase enzyme in the synaptic cleft, preventing the breakdown of acetylcholine into choline and acetate. Consequently, the concentration of acetylcholine in the synaptic cleft increases. These agonists can be classified into reversible and irreversible inhibitors based on their duration of action.
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Enzyme Inhibition

Inhibitors are molecules that reduce enzyme activity by binding to the enzyme. In a normally functioning cell, enzymes are regulated by a variety of inhibitors. Drugs and other toxins can also inhibit enzymes. Some inhibitors bind to the enzyme’s active site, while others inhibit enzymatic activity by binding to other sites on the protein structure.
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Role of Matrix Metalloproteases in Degradation of ECM

Matrix metalloproteases (MMPs) are enzymes involved in the hydrolysis of proteins and glycoproteins of the extracellular matrix. MMPs are essential for the migration and proliferation of cells through the dense matrix network, throughout embryonic development, and throughout morphogenesis. The first MMP activity discovered was a collagenase in a tadpole's tail undergoing metamorphosis. The active collagen deposition and modifications lead to the morphogenesis of tadpoles into the adult body.
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Simultaneous Measurement of HDAC1 and HDAC6 Activity in HeLa Cells Using UHPLC-MS
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MMP-2 selectivity in hydroxamate-type inhibitors.

P Serra1, M Bruczko, J M Zapico

  • 1Department of Chemistry, Universidad CEU San Pablo, Madrid, Spain.

Current Medicinal Chemistry
|January 20, 2012
PubMed
Summary

Selective inhibition of matrix metalloproteinase-2 (MMP-2) is a promising anticancer strategy. Hydroxamates offer selectivity, particularly against MMP-9, guiding the design of novel antitumoral agents.

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Area of Science:

  • Biochemistry
  • Pharmacology
  • Oncology

Background:

  • Extracellular matrix metalloproteinases (MMPs) are enzymes crucial for tumor growth, invasion, and angiogenesis.
  • Targeting specific MMPs is key for effective anticancer drug design, as broad-spectrum inhibition can cause adverse effects.
  • MMP-9 inhibition presents a dual role, beneficial in early-stage cancers but detrimental in advanced disease, necessitating careful consideration.

Purpose of the Study:

  • To review hydroxamate-type inhibitors with a focus on MMP-2 selectivity.
  • To explore the chemical structure, structure-activity relationships (SAR), synthesis, and molecular modeling of these inhibitors.
  • To provide insights for designing novel anticancer agents targeting MMP-2.

Main Methods:

  • Review of existing literature on hydroxamate-based MMP inhibitors.
  • Analysis of chemical structures and SAR data for MMP-2 selective compounds.
  • Examination of synthetic methodologies and molecular modeling studies.

Main Results:

  • Hydroxamates demonstrate potential as selective MMP-2 inhibitors, particularly against MMP-9.
  • Understanding the SAR of hydroxamate inhibitors is crucial for achieving desired selectivity.
  • Molecular modeling aids in the rational design of potent and selective MMP-2 inhibitors.

Conclusions:

  • Selective MMP-2 inhibition is a viable strategy for anticancer drug development.
  • Hydroxamates represent a promising class of compounds for achieving MMP-2 selectivity.
  • Further research into hydroxamate-based inhibitors can lead to the development of effective new anticancer therapies.