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NSC 617145 (NSC617145) is an inhibitor of WRN helicase that inhibits the ATPase, but not exonuclease, activity of WRN helicase in a concentration-dependent manner.

Estrandron is an agent containing testosterone, estradiol or their derivatives reported in eastern European literature.

Bleomycin sulfate is a glycopeptide antibiotic with antitumor activity. It is commonly used as a DNA-damaging agent and DNA synthesis inhibitor. It functions by inducing DNA strand breaks without affecting RNA strands. Bleomycin sulfate is widely used in cancer research and for establishing pulmonary fibrosis animal models.

Bleomycin hydrochloride is a glycopeptide antibiotic and a DNA synthesis inhibitor. Bleomycin Sulfate can cause DNA strand breaks but not RNA strand breaks. Bleomycin Sulfate has anti-tumor activity.

Elesclomol (STA-4783) is an oxidative stress inducer and a highly lipophilic copper ion carrier. Elesclomol induces apoptosis in tumor cells and is used in copper death related studies. Elesclomol also inhibits FDX1-mediated Fe-S cluster biosynthesis.

Lometrexol (LY 264618), an antipurine Antifolate, can inhibit the activity of glycinamide ribonucleotide formyltransferase (GARFT) but do not induce detectable levels of DNA strand breaks. Lometrexol can further inhibit de novo purine synthesis, causing abnormal cell proliferation and Apoptosis, even cell cycle arrest. Lometrexol has anticancer activity. Lometrexol also is a potent human Serine hydroxymethyltransferase1 2 (hSHMT1 2) inhibitor.

Thalicarpine is a natural aporphine benzylisoquinoline vinca alkaloid with antineoplastic activity. Thalicarpine binds to and inhibits p-glycoprotein, the multidrug resistance efflux pump. Thalicarpine also induces single-strand breaks in DNA and arrests cancer cells at the G2 M and G1 phase of the cell cycle. Check for active clinical trials or closed clinical trials using this agent.

Tinidazole (CP12574)a is a 5-nitroimidazole derivative with the antiprotozoal property. Although the mechanism of action has not been fully elucidated, it has been suggested that tinidazole is metabolized and yields nitrite anions and metronidazole. Metronidazole's nitro group, in turn, is reduced via the parasite ferredoxin, thereby generating a series of free nitro radicals including nitro anions. Toxicity is achieved via depletion of sulfhydryl groups and DNA strand breaks with multiple hits having an additive effect and ultimately leading to cell death.

Ifosfamide (NSC-109724) alkylates and forms DNA crosslinks, thereby preventing DNA strand separation and DNA replication. Ifosfamide is a synthetic analog of the nitrogen mustard cyclophosphamide with antineoplastic activity. This agent is a prodrug that must be activated through hydroxylation by hepatic microsomal enzymes.

Capecitabine (Capecitibine) is a fluoropyrimidine carbamate belonging to the class of antineoplastic agents called antimetabolites. As a prodrug, capecitabine is selectively activated by tumor cells to its cytotoxic moiety, 5-fluorouracil (5-FU); subsequently, 5-FU is metabolized to two active metabolites, 5-fluoro-2-deoxyuridine monophosphate (FdUMP) and 5-fluorouridine triphosphate (FUTP) by both tumor cells and normal cells. FdUMP inhibits DNA synthesis and cell division by reducing normal thymidine production, while FUTP inhibits RNA and protein synthesis by competing with uridine triphosphate for incorporation into the RNA strand.

Doxifluridine (AMC 0101) is a fluoropyrimidine derivative and oral prodrug of the antineoplastic agent 5-fluorouracil (5-FU) with antitumor activity. Doxifluridine, designed to circumvent the rapid degradation of 5-FU by dihydropyrimidine dehydrogenase in the gut wall, is converted into 5-FU in the presence of pyrimidine nucleoside phosphorylase. 5-FU interferes with DNA synthesis and subsequent cell division by reducing normal thymidine production and interferes with RNA transcription by competing with uridine triphosphate for incorporation into the RNA strand.

Methoxyamine HCl (Methoxyamine) covalently binds to apurinic/apyrimidinic (AP) DNA damage sites and inhibits base excision repair (BER), which may result in an increase in DNA strand breaks and apoptosis. Methoxyamine is an orally bioavailable small molecule inhibitor with potential adjuvant activity. This agent may potentiate the anti-tumor activity of alkylating agents.

Nerolidol (Peruviol) shows sedative effects in animals, oxidative process plays a crucial role on neuronal pathological consequence. Nerolidol is mainly related to ROS and DNA single strand breaks generated by the presence of oxidative lesions.

5-Bromouridine is a uracil derivative with a broad spectrum of antitumor activity that induces apoptosis in cancer cells by inhibiting DNA synthesis.5-Bromouridine is also used as a marker for DNA and RNA, where the molecule is labeled with a radioisotope or pigment after being introduced into a DNA or RNA strand.

Tempo (2,2,6,6-Tetramethylpiperidinooxy) has a wide range of applications including use as a free radical scavenger, a reagent in organic synthesis and as a structural probe in electron spin resonance spectroscopy.

Cabotegravir (S/GSK1265744) (GSK744, GSK1265744) is a long-acting HIV integrase inhibitor and inhibits the HIV-1 integrase catalyzed strand transfer reaction (IC50: 3.0 nM).

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.

Mitoxantrone (mitozantrone) is an anthracenedione antibiotic with antineoplastic activity. Mitoxantrone intercalates into and crosslinks DNA, thereby disrupting DNA and RNA replication. This agent also binds to topoisomerase II, resulting in DNA strand breaks and inhibition of DNA repair. Mitoxantrone is less cardiotoxic compared to doxorubicin.

Niraparib, also know as MK-4827, is an inhibitor of poly (ADP-ribose) polymerase (PARP) with potential antineoplastic activity. MK4827 inhibits PARP activity, enhancing the accumulation of DNA strand breaks and promoting genomic instability and apoptosis. The PARP family of proteins detect and repair single strand DNA breaks by the base-excision repair (BER) pathway.

Tenofovir diphosphate TEA (TFV-DP TEA) is the triethylamine salt of TFV-DP, an ATP-competitive DNA polymerase inhibitor that inhibits HIV-1 reverse transcriptase. It has anti-HIV HBV potential through its incorporation into the viral DNA strand to terminate viral DNA synthesis and thus inhibit viral genome replication.

COH29 (RNR Inhibitor COH29) is an orally available, aromatically substituted thiazole and human ribonucleotide reductase (RNR) inhibitor with potential antineoplastic activity. COH29 binds to the ligand-binding pocket of the RNR M2 subunit (hRRM2) near the C-terminal tail, decreasing the pool of deoxyribonucleotide triphosphates needed for DNA synthesis, leading to cell cycle arrest and growth inhibition. It may also inhibit the nuclear enzyme poly (ADP-ribose) polymerase (PARP) 1, preventing DNA repair, causing accumulation of DNA breaks, and inducing apoptosis.

Mirin is a Mre11-Rad50-Nbs1 (MRN) complex inhibitor that inhibits MRN-dependent ATM activation without affecting ATM protein kinase activity. It also inhibits Mre11-associated exonuclease activity, thereby disrupting DNA double-strand break repair.Mirin induces cell cycle arrest in G1 phase.

UNC-2170 (UNC2170 Maleate) is the methyl-lysine binding protein, 53BP1 ligand.

VX-984 (M9831) is an oral, selective DNA-PK inhibitor that can cross the blood-brain barrier. VX-984 inhibited the conjugation of non-homologous terminal NHEJ and acted on DSBs to break DNA double strand. VX-984 is commonly seen in glioblastoma (GBM) and non-small cell lung cancer (NSC-LC) studies.