Date published: 2026-4-1

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LTH-A Activators

Heat-labile enterotoxins, particularly from E. coli, primarily function by perturbing the adenylate cyclase-cAMP pathway in host cells. This perturbation leads to the hallmark symptom of diarrhea. Activators of LTH-A, as tabulated above, revolve around the modulation of the cAMP pathway, either through direct elevation of cAMP or through cellular mechanisms that lead to its increase. Exogenous application of these chemicals can act in tandem with LTH-A to accentuate the cellular responses tied to cAMP elevation.

From another perspective, the rationale behind using such activators is to mimic, potentiate, or amplify the inherent activity of LTH-A. By enhancing the cellular responses associated with LTH-A, these activators play a pivotal role in driving the biological effects downstream of cAMP elevation. Such combined effects might have implications in understanding the full of LTH-A as a toxin, especially in contexts where LTH is being considered for transcutaneous delivery of antigens. This reinforces the importance of precisely understanding the interplay between LTH-A and its activators.

SEE ALSO...

Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

(−)-Epinephrine

51-43-4sc-205674
sc-205674A
sc-205674B
sc-205674C
sc-205674D
1 g
5 g
10 g
100 g
1 kg
$41.00
$104.00
$201.00
$1774.00
$16500.00
(1)

Epinephrine can upregulate adenylate cyclase, potentially enhancing the cAMP increase caused by LTH-A.

PGE2

363-24-6sc-201225
sc-201225C
sc-201225A
sc-201225B
1 mg
5 mg
10 mg
50 mg
$57.00
$159.00
$275.00
$678.00
37
(1)

PGE2 is known to enhance cAMP production. In the context of LTH-A activity, this can act to potentially amplify the cAMP-mediated cellular effects.

Calcium dibutyryladenosine cyclophosphate

362-74-3sc-482205
25 mg
$147.00
(0)

A cell-permeable analog of cAMP that can enhance cellular responses linked to increased cAMP levels, such as those promoted by LTH-A.

Forskolin

66575-29-9sc-3562
sc-3562A
sc-3562B
sc-3562C
sc-3562D
5 mg
50 mg
1 g
2 g
5 g
$78.00
$153.00
$740.00
$1413.00
$2091.00
73
(3)

Directly stimulates adenylate cyclase, amplifying the cAMP response that LTH-A would induce.

IBMX

28822-58-4sc-201188
sc-201188B
sc-201188A
200 mg
500 mg
1 g
$260.00
$350.00
$500.00
34
(1)

A non-selective inhibitor of phosphodiesterases, leading to increased cAMP levels. This can enhance responses tied to LTH-A activity.

Rolipram

61413-54-5sc-3563
sc-3563A
5 mg
50 mg
$77.00
$216.00
18
(1)

Phosphodiesterase inhibitor that raises cAMP levels, potentially amplifying the cellular effects initiated by LTH-A.

Zardaverine

101975-10-4sc-201208
sc-201208A
5 mg
25 mg
$88.00
$379.00
1
(0)

Another phosphodiesterase inhibitor, leading to elevated cAMP levels which could accentuate LTH-A related cellular activities.

Adenosine

58-61-7sc-291838
sc-291838A
sc-291838B
sc-291838C
sc-291838D
sc-291838E
sc-291838F
1 g
5 g
100 g
250 g
1 kg
5 kg
10 kg
$34.00
$48.00
$300.00
$572.00
$1040.00
$2601.00
$4682.00
1
(0)

Through certain receptors, adenosine can lead to increased cAMP levels, thus potentially enhancing the cellular effects tied to LTH-A activity.

SQ 22536

17318-31-9sc-201572
sc-201572A
5 mg
25 mg
$95.00
$363.00
13
(1)

An adenylate cyclase inhibitor that in specific contexts might lead to compensatory mechanisms that amplify cAMP production.