Topoisomerase

Datopotamab deruxtecan (DS-1062) is a trophoblast cell surface antigen 2 (TROP2)-targeted antibody-drug conjugate (ADC) with antitumor activity. Datopotamab deruxtecan induces significant antibody-dependent cellular cytotoxicity in the presence of peripheral blood lymphocytes and inhibits tumor growth in xenograft models.

Doxorubicin hydrochloride is an anthracycline antibiotic with cytotoxic and antitumor activity. It is an effective inhibitor of human DNA topoisomerase I and II, with IC50 values of 0.8 μM and 2.67 μM, respectively. In addition to inhibiting DNA topoisomerases, it can reduce the phosphorylation of AMPK and its downstream target, acetyl-CoA carboxylase. Doxorubicin hydrochloride also induces apoptosis and autophagy. In animal studies, it is commonly used to induce models of acute renal failure, chronic kidney injury, and heart failure.

Dxd (OQM5SD32BQ) is a potent DNA topoisomerase I inhibitor (IC50= 0.31 μM). Dxd was used as a conjugate drug for HER2-targeted ADCs.

Trovafloxacin is a broad-spectrum fluoroquinolone antibiotic that inhibits the activity of DNA gyrase and topoisomerase IV, enzymes involved in DNA replication. It also acts as an effective and specific inhibitor of the pannexin 1 channel (PANX1, IC50 = 4 μM).

Niranthin is a potent anti-leishmanial agent, inhibits the relaxation activity of heterodimeric type IB topoisomerase of L. donovani and acts as a non-competitive inhibitor interacting with both subunits of the enzyme. Niranthin also exhibits anti-hepatitis B virus, antiinflammatory and antiallodynic actions.

Etoposide (VP-16-213) is a topoisomerase II inhibitor that inhibits DNA synthesis by forming a complex with topoisomerase II and DNA (IC50=60.3 μM). Etoposide has antitumor activity and induces apoptosis and autophagy.

Epirubicin hydrochloride (Pharmorubicin) is an adriamycin derivative, a topoisomerase (Topo) inhibitor, and a Forkhead box protein p3 (Foxp3) inhibitor. Epirubicin hydrochloride has antitumor activity.

Irinotecan (CPT-11), a derivative of camptothecin, is an inhibitor of DNA topoisomerase I (Topo I). Irinotecan has antitumor activity by preventing DNA strand reattachment through binding to the Topo I complex, resulting in double-stranded DNA breaks and cell death.

Ellipticine (Elliptisine) is a potent antineoplastic agent exhibiting multiple mechanisms of action, IC50 of 0.67±0.06, 1.25±0.13, 1.25±0.13, 0.67±0.06, 0.27±0.02, 0.49±0.04, 0.44±0.03, and 1.48±0.62 μM for Leukemia HL-60, Breast adenocarcinoma MCF-7, Breast adenocarcinoma MCF-7, Leukemia HL-60, Neuroblastoma IMR-32, Neuroblastoma UKF-NB-4, Neuroblastoma UKF-NB-3, and Glioblastoma U87 mg cell, respectively.

Suramin Sodium Salt (BAY-205) is a sodium salt form of suramin, a polysulphonated naphthylurea with potential antineoplastic activity. Suramin blocks the binding of various growth factors, including insulin-like growth factor I (IGF-I), epidermal growth factor (EGF), platelet-derived growth factor (PDGF), and tumor growth factor-beta (TGF-beta), to their receptors, thereby inhibiting endothelial cell proliferation and migration. This agent also inhibits vascular endothelial growth factor (VEGF)- and basic fibroblast growth factor (bFGF)-induced angiogenesis; retroviral reverse transcriptase; uncoupling of G-proteins from receptors; topoisomerases; cellular folate transport; and steroidogenesis.

Doxorubicin (Adriamycin) is a fluorescent anthracycline antitumor antibiotic that inhibits Topoisomerase I/II, induces apoptosis and autophagy, downregulates the AMPK signaling pathway, and is commonly used in cancer chemotherapy as well as in models of nephritis and heart failure.

Lamellarin D (Lamellarine D), a hexacyclic pyrrolizidine alkaloid isolated from marine invertebrates, is a mitochondria-targeted topoisomerase I inhibitor and a pro-apoptotic agent.

Zoliflodacin (ETX0914) (ETX0914, AZD0914) is a new bacterial DNA gyrase/topoisomerase inhibitor. Zoliflodacin has potent in vitro antibacterial activity against Gram-positive and Gram-negative organisms, including S. aureus (MIC90: 0.25 μg/mL).

Ledoxantrone trihydrochloride is a Top II inhibitor with anticancer activity and is used in the study of digestive disorders and urologic disorders.

Daunorubicin hydrochloride (Rubidomycin hydrochloride), an anthracycline aminoglycoside antineoplastic, inhibits DNA replication and repair and RNA and protein synthesis.

Ciprofloxacin hydrochloride monohydrate (Bay-09867 hydrochloride monohydrate) is a fluoroquinolone antibiotic,is an antibiotic used to treat a number of bacterial infections

Exatecan (DX-8951f) is a DNA topoisomerase I (TOP1) inhibitor with an IC50 value of 2.2 μM (0.975 μg/mL).Exatecan has antitumor activity and may be used in cancer research.

Topotecan hydrochloride (NSC609699) is an antineoplastic agent used to treat ovarian cancer.

EIDD-1931 (Beta-d-N4-hydroxycytidine) is a ribonucleoside analog with antiviral activity that inhibits the replication of severe acute respiratory syndrome coronavirus [SARS-CoV] in Vero 76 cells, Middle East respiratory syndrome coronavirus [MERS-CoV] in Calu-3 2B4 cells, and SARS-CoV-2 in Vero cells (IC50s = 0.1, 0.15, and 0.3 μM, respectively).

Levofloxacin ((-)-Ofloxacin) is a synthetic fluoroquinolone antibiotic that inhibits the superhelical activity of bacterial DNA rotamase and prevents DNA replication. Levofloxacin is a broad-spectrum antibiotic used for the treatment of a wide range of bacterial infections.

AQ4 is a topoisomerase II inhibitor and DNA-inserting agent that displays antitumor activity in CRC cell lines.

XR 5944 is an antitumor compound that targets DNA, is a topoisomerase inhibitor, inhibits ER activity, and can be used to study colon and lung cancer.

Topotecan (NSC-609669) is a Topoisomerase I inhibitor,and is an antineoplastic agent used to treat ovarian cancer that works by inhibiting DNA topoisomerases.

Gemifloxacin mesylate (Gemifloxacin mesylate) inhibits activities of DNA gyrase and topoisomerase IV, thereby inhibiting DNA replication and eventually bacterial growth. Gemifloxacin Mesylate is the mesylate salt form of gemifloxacin, a synthetic broad-spectrum fluoroquinolone with antibacterial activity. This fluoroquinolone exerts an enhanced spectrum of activity against gram-positive bacteria such as Streptococcus pneumonia and Staphylococcus aureus, in addition to its activity against gram-negative bacteria.