Nucleoside Antimetabolite/Analog Inhibitor

5-Fluorouracil (5-FU) is an analogue of uracil and a potent antitumor agent. 5-Fluorouracil affects pyrimidine synthesis by inhibiting thymidylate synthetase thus depleting intracellular dTTP pools. 5-Fluorouracil induces apoptosis and can be used as a chemical sensitizer. 5-Fluorouracil also inhibits HIV.

Gemcitabine (LY 188011) is a pyrimidine nucleoside analog antimetabolite and an antineoplastic agent. Gemcitabine inhibits DNA synthesis and repair, and can modulate autophagy. Gemcitabine induces apoptosis through the activation of p38 MAPK. Gemcitabine demonstrates efficacy in mouse models of pancreatic and breast cancer. Gemcitabine can be used for cancer research, such as pancreatic cancer, non-small cell lung cancer, and breast cancer.

5-BrdU (BrdU) is a nucleoside analog that competes with thymidine for incorporation into DNA. 5-BrdU is commonly used in the detection of proliferating cells.

Fludarabine (NSC 118218) is a DNA synthesis inhibitor and a fluorinated purine analogue with antineoplastic activity in lymphoproliferative malignancies. Fludarabine inhibits the cytokine-induced activation of STAT1 and STAT1-dependent gene transcription in normal resting or activated lymphocytes.

Gemcitabine Hydrochloride (LY 188011 Hydrochloride) is a pyrimidine nucleoside analog antimetabolite and an antineoplastic agent. Gemcitabine Hydrochloride inhibits DNA synthesis and repair, resulting in autophagyand apoptosis.

Capecitabine is an oral proagent that is converted to its active metabolite, 5-FU, by thymidine phosphorylase.

Floxuridine (5-Fluorouracil 2'-deoxyriboside) is a pyrimidine analog and known as an oncology antimetabolite. Floxuridine inhibits Poly(ADP-Ribose) polymerase and induces DNA damage by activating the ATM and ATR checkpoint signaling pathways in vitro. Floxuridine is a extreamly potent inhibitor for S. aureus infection and induces cell apoptosis. Floxuridine has antiviral effects against HSV and CMV.

Dacarbazine is a nonspecific antineoplastic (antineoplastic) alkylating agent. Dacarbazine inhibits T and B lymphocyte responses with IC₅₀ of 50 and 10 μg/mL, respectively. Dacarbazine can be used in the study of metastatic malignant melanoma.

Raltitrexed is an antimetabolite agent used in chemotherapy, acting by inhibiting thymidylate synthase.

Clofarabine, a nucleoside analogue for research of cancer, is a potent inhibitor of ribonucleotide reductase (IC₅₀=65 nM) by binding to the allosteric site on the regulatory subunit.

Trifluridine/tipiracil hydrochloride mixture (TAS-102) is a potent and orally active nucleoside antitumor agent. The composition of Trifluridine/tipiracil hydrochloride mixture (TAS-102) is a 1:0.5 mixture (on a molar basis) of alpha,alpha,alpha-tri-fluorothymidine (FTD) and thymidine phosphorylase inhibitor (TPI). Trifluridine/tipiracil hydrochloride mixture (TAS-102) shows the antitumor activity mainly via the inhibition of thymidylate synthase (TS) and incorporation into DNA.

Fludarabine (phosphate) is an analogue of adenosine and deoxyadenosine, which is able to compete with dATP for incorporation into DNA and inhibit DNA synthesis.

Forodesine (BCX-1777) is a highly potent and orally active purine nucleoside phosphorylase (PNP) inhibitor with IC₅₀ values ranging from 0.48 to 1.57 nM for human, mouse, rat, monkey and dog PNP. Forodesine is a potent human lymphocyte proliferation inhibitor. Forodesine could induce apoptosis in leukemic cells by increasing the dGTP levels.

Tipiracil (hydrochloride) is a thymidine phosphorylase inhibitor (TPI), used for cancer research.

Nelarabine (506U78) is a nucleoside analogue and can be used for the research of T cell acute lymphoblastic leukemia (T-ALL).

Carmofur (HCFU) is a rat recombinant acid ceramidase inhibitor with an IC₅₀ of 29 nM. Carmofur is also a protease inhibitor of SARS-CoV-2 main protease (Mpro), fatty acid amide hydrolase (FAAH) and N-acylethanolamine acid amidase (NAAA). Carmofur has anti-cancer, anti-inflammatory and anti-virus activities, and can be used for the study of COVID-19 and acute lung injury (ALI).

Tegafur (FT 207; NSC 148958) is a chemotherapeutic 5-FU proagent used in the treatment of cancers; is a component of tegafur-uracil.

Forodesine hydrochloride (BCX-1777 hydrochloride) is a highly potent and orally active purine nucleoside phosphorylase (PNP) inhibitor with IC₅₀ values ranging from 0.48 to 1.57 nM for human, mouse, rat, monkey and dog PNP. Forodesine hydrochloride is a potent human lymphocyte proliferation inhibitor. Forodesine hydrochloride could induce apoptosis in leukemic cells by increasing the dGTP levels.

Tipiracil is a thymidine phosphorylase (TPase) inhibitor.

7-Methylguanosine is a modified nucleoside widely present in various RNAs and a key metabolite of the 5'-cap structure of eukaryotic mRNA. 7-Methylguanosine plays important roles in stabilizing RNA structures, regulating translation, and other aspects.