Date published: 2026-4-1

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NOL8 Inhibitors

Chemical inhibitors of NOL8 can impede its function through various modes of action, primarily by targeting processes that are essential for ribosome biogenesis and cell cycle progression, in which NOL8 is fundamentally involved. Alsterpaullone, Roscovitine, and Olomoucine are such inhibitors that directly target cyclin-dependent kinases (CDKs), enzymes that are pivotal for cell cycle control. The inhibition of CDKs disrupts the cell cycle and transcription regulation, which consequently impacts NOL8's role in ribosomal RNA processing and assembly. Leptomycin B takes a different approach by binding to exportin 1, also known as CRM1. This binding inhibits nuclear export, leading to the accumulation of ribonucleoprotein complexes within the nucleus. Since NOL8 is associated with nucleo-cytoplasmic transport, the blockade of CRM1 by Leptomycin B can hamper NOL8's functionality in this process.

On the transcriptional level, Actinomycin D, Triptolide, BMH-21, and CX-5461 destabilize NOL8's function by inhibiting RNA polymerase I, which is crucial for ribosomal RNA synthesis, a fundamental aspect of NOL8's role. DRB extends this transcriptional inhibition to RNA polymerase II, thus impacting a broader range of RNA synthesis, including mRNA, which is essential for the production of proteins that interact with NOL8 in ribosome assembly. Homoharringtonine affects protein synthesis by inhibiting elongation during translation, which can indirectly affect NOL8's function in ribosome biogenesis. Mycophenolic acid depletes guanine nucleotides by inhibiting inosine monophosphate dehydrogenase. This depletion can compromise rRNA processing, a task in which NOL8 is closely involved. Lastly, Tunicamycin, although it does not directly modify NOL8, disrupts cellular homeostasis by blocking N-linked glycosylation. This can create an indirect effect on NOL8's role within the nucleolus, where proper glycosylation is required for the maintenance of multiple cellular functions.

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Items 1 to 10 of 12 total

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Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Alsterpaullone

237430-03-4sc-202453
sc-202453A
1 mg
5 mg
$68.00
$312.00
2
(1)

Alsterpaullone directly inhibits CDKs which are crucial for cell cycle progression. Since NOL8 is implicated in ribosome biogenesis and the cell cycle, inhibition of CDKs can result in reduced function of NOL8 due to disruption of cell cycle-dependent nucleolar processes.

Roscovitine

186692-46-6sc-24002
sc-24002A
1 mg
5 mg
$94.00
$265.00
42
(2)

Roscovitine inhibits cyclin-dependent kinases (CDKs) which play a role in transcription and cell cycle control. NOL8 function is tied to these processes, and inhibiting CDKs can lead to a reduction in ribosomal RNA processing, thereby inhibiting NOL8 function.

Olomoucine

101622-51-9sc-3509
sc-3509A
5 mg
25 mg
$72.00
$274.00
12
(1)

Olomoucine, a purine derivative, inhibits CDKs affecting cell cycle and transcription regulation. This can interfere with the processing and assembly of ribosomal units, processes in which NOL8 is involved, thus inhibiting its function.

Leptomycin B

87081-35-4sc-358688
sc-358688A
sc-358688B
50 µg
500 µg
2.5 mg
$107.00
$416.00
$1248.00
35
(2)

Leptomycin B inhibits nuclear export by binding to exportin 1 (CRM1). Since NOL8 is involved in nucleo-cytoplasmic transport, the blockade of CRM1 can lead to the accumulation of ribonucleoprotein complexes in the nucleus, inhibiting NOL8's function in the process.

Actinomycin D

50-76-0sc-200906
sc-200906A
sc-200906B
sc-200906C
sc-200906D
5 mg
25 mg
100 mg
1 g
10 g
$74.00
$243.00
$731.00
$2572.00
$21848.00
53
(3)

Actinomycin D binds to DNA and inhibits RNA polymerase, which would lead to a decrease in ribosomal RNA synthesis. Since NOL8 is implicated in ribosomal RNA processing, the inhibition of RNA polymerase can indirectly inhibit NOL8 function by limiting its RNA substrate.

Triptolide

38748-32-2sc-200122
sc-200122A
1 mg
5 mg
$90.00
$204.00
13
(1)

Triptolide inhibits RNA polymerase I, which is responsible for ribosomal RNA synthesis. By decreasing ribosomal RNA production, triptolide can indirectly inhibit NOL8 function as it is involved in ribosome biogenesis.

BMH-21

896705-16-1sc-507460
10 mg
$165.00
(0)

BMH-21 binds to RNA polymerase I and is a nucleolar stress inducer. By binding to RNA polymerase I, BMH-21 can inhibit ribosomal RNA transcription, thus indirectly inhibiting NOL8 function which is dependent on ribosome biogenesis.

CX-5461

1138549-36-6sc-507275
5 mg
$245.00
(0)

CX-5461 selectively inhibits RNA polymerase I, thus reducing ribosomal RNA synthesis. NOL8 plays a role in ribosome assembly, so the inhibition of RNA synthesis by CX-5461 can indirectly inhibit the function of NOL8.

DRB

53-85-0sc-200581
sc-200581A
sc-200581B
sc-200581C
10 mg
50 mg
100 mg
250 mg
$43.00
$189.00
$316.00
$663.00
6
(1)

DRB inhibits RNA Polymerase II which is essential for mRNA synthesis. As NOL8 is involved in the nucleolar processes linked to ribosome assembly, the inhibition of RNA Polymerase II can result in reduced ribosome biogenesis, thereby inhibiting NOL8 function.

Homoharringtonine

26833-87-4sc-202652
sc-202652A
sc-202652B
1 mg
5 mg
10 mg
$52.00
$125.00
$182.00
11
(1)

Homoharringtonine inhibits protein synthesis at the level of translation elongation. As NOL8 is involved in the production of ribosomes, inhibition of protein synthesis can indirectly affect NOL8's role in ribosome biogenesis.