Date published: 2025-11-24

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MCM3 Inhibitors

MCM3 inhibitors encompass a diverse array of compounds that intricately modulate the activity of minichromosome maintenance complex component 3 (MCM3), a crucial player in DNA replication and cell cycle progression. Among the selected inhibitors, both direct and indirect mechanisms are employed to hinder MCM3 function, reflecting the complexity of cellular processes governed by this replicative helicase. Direct inhibitors, such as Aphidicolin and Roscovitine, exert their effects by directly interacting with MCM3 or closely associated proteins. Aphidicolin, a specific inhibitor of replicative polymerases, binds to the catalytic site of DNA polymerase α, impeding DNA synthesis and directly inhibiting the unwinding function of MCM3. On the other hand, Roscovitine directly inhibits cyclin-dependent kinases, including CDK2, disrupting the phosphorylation of MCM3 and impeding DNA replication initiation. Indirect inhibitors, including Cisplatin and Gemcitabine, influence MCM3 activity through perturbation of broader cellular processes. Cisplatin induces DNA crosslinks and adducts, disrupting DNA replication and indirectly inhibiting MCM3. Similarly, Gemcitabine, a nucleoside analogue, incorporates into growing DNA chains during replication, causing chain termination and hindering MCM3 function by impeding DNA synthesis. Furthermore, compounds like HU (Hydroxyurea) and Thymidine showcase indirect inhibition by affecting DNA replication. HU induces replication stress by inhibiting ribonucleotide reductase, reducing the pool of deoxyribonucleotides and impeding MCM3 function. Thymidine, as a nucleoside, competes with deoxythymidine triphosphate during replication, slowing down DNA synthesis and indirectly inhibiting MCM3. Additionally, indirect inhibitors such as Doxorubicin and Etoposide impact MCM3 through their influence on DNA replication and topoisomerases. Doxorubicin intercalates into DNA and inhibits topoisomerase II, inducing DNA damage and replication stress, indirectly inhibiting MCM3. Etoposide forms a complex with topoisomerase II and DNA, inducing DNA strand breaks and replication stress, providing an indirect mechanism for inhibiting MCM3.

Items 1 to 10 of 12 total

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Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Cisplatin

15663-27-1sc-200896
sc-200896A
100 mg
500 mg
$76.00
$216.00
101
(4)

Cisplatin, a platinum-based chemotherapeutic, acts as an indirect inhibitor of MCM3. By inducing DNA crosslinks and adducts, cisplatin disrupts DNA replication, indirectly impacting the function of MCM3, a key replicative helicase. This disruption leads to stalled replication forks and impedes the normal progression of the cell cycle, providing an indirect mechanism for inhibiting MCM3 and compromising cellular proliferation.

2′-Deoxy-2′,2′-difluorocytidine

95058-81-4sc-275523
sc-275523A
1 g
5 g
$56.00
$128.00
(1)

Also called Gemcitabine, this compound is an indirect inhibitor of MCM3 through its influence on DNA synthesis. As a nucleoside analogue, gemcitabine is incorporated into growing DNA chains during replication, causing chain termination and inhibiting DNA synthesis. This indirect inhibition disrupts the normal functioning of MCM3 by impeding the unwinding of DNA strands, contributing to cell cycle arrest and apoptosis.

Aphidicolin

38966-21-1sc-201535
sc-201535A
sc-201535B
1 mg
5 mg
25 mg
$82.00
$300.00
$1082.00
30
(3)

Aphidicolin is a direct inhibitor of MCM3 and other replicative polymerases. By binding to the catalytic site of DNA polymerase α and preventing its interaction with the template DNA, aphidicolin directly inhibits DNA synthesis and unwinding, impeding the function of MCM3. This direct inhibition results in the formation of stalled replication forks and contributes to cell cycle arrest, providing a targeted approach to inhibit MCM3 and disrupt cellular proliferation.

Hydroxyurea

127-07-1sc-29061
sc-29061A
5 g
25 g
$76.00
$255.00
18
(1)

Hydroxyurea (HU) is an indirect inhibitor of MCM3 through its impact on DNA replication. HU induces replication stress by inhibiting ribonucleotide reductase, leading to a reduction in the pool of deoxyribonucleotides required for DNA synthesis. This indirect inhibition disrupts the normal functioning of MCM3 by causing replication fork stalling and DNA damage, contributing to cell cycle arrest and apoptosis.

Thymidine

50-89-5sc-296542
sc-296542A
sc-296542C
sc-296542D
sc-296542E
sc-296542B
1 g
5 g
100 g
250 g
1 kg
25 g
$48.00
$72.00
$265.00
$449.00
$1724.00
$112.00
16
(1)

Thymidine is an indirect inhibitor of MCM3 by influencing DNA synthesis. As a nucleoside, thymidine competes with deoxythymidine triphosphate (dTTP) during DNA replication. This competition results in the slowing down of DNA synthesis and the formation of replication stress, indirectly inhibiting the function of MCM3.

Doxorubicin

23214-92-8sc-280681
sc-280681A
1 mg
5 mg
$173.00
$418.00
43
(3)

Doxorubicin is an indirect inhibitor of MCM3 through its impact on DNA replication and topoisomerase II. By intercalating into DNA and inhibiting topoisomerase II, doxorubicin induces DNA damage and replication stress, indirectly inhibiting the function of MCM3. This disruption leads to the formation of stalled replication forks, DNA strand breaks, and cell cycle arrest, providing an indirect mechanism for inhibiting MCM3 and compromising cellular proliferation.

Roscovitine

186692-46-6sc-24002
sc-24002A
1 mg
5 mg
$92.00
$260.00
42
(2)

Roscovitine is a direct inhibitor of cyclin-dependent kinases (CDKs), including CDK2. By inhibiting CDKs, roscovitine disrupts the phosphorylation of MCM3 and other components of the pre-replication complex, directly inhibiting DNA replication initiation. This direct inhibition results in stalled replication forks and cell cycle arrest, providing a targeted approach to inhibit MCM3 and impede cellular proliferation.

Etoposide (VP-16)

33419-42-0sc-3512B
sc-3512
sc-3512A
10 mg
100 mg
500 mg
$32.00
$170.00
$385.00
63
(1)

Etoposide is an indirect inhibitor of MCM3 through its impact on topoisomerase II. By forming a complex with topoisomerase II and DNA, etoposide induces DNA strand breaks and replication stress, indirectly inhibiting the function of MCM3. This disruption leads to the formation of stalled replication forks, DNA damage, and cell cycle arrest, providing an indirect mechanism for inhibiting MCM3 and compromising cellular proliferation.

Fluorouracil

51-21-8sc-29060
sc-29060A
1 g
5 g
$36.00
$149.00
11
(1)

Fluorouracil is an indirect inhibitor of MCM3 through its influence on DNA synthesis. As a fluorinated analogue of uracil, Fluorouracil is incorporated into RNA and DNA, leading to chain termination during replication. This indirect inhibition disrupts the normal functioning of MCM3 by impeding the unwinding of DNA strands and causing replication stress, contributing to cell cycle arrest and apoptosis.

Olaparib

763113-22-0sc-302017
sc-302017A
sc-302017B
250 mg
500 mg
1 g
$206.00
$299.00
$485.00
10
(1)

Olaparib is an indirect inhibitor of MCM3 through its impact on poly(ADP-ribose) polymerase (PARP). By inhibiting PARP, olaparib disrupts DNA repair mechanisms, inducing replication stress and DNA damage. This indirect inhibition compromises the function of MCM3 by contributing to stalled replication forks and cell cycle arrest, providing an indirect mechanism for inhibiting MCM3 and impeding cellular proliferation.