Phorbol esters

Short description: Group of chemical compounds

Chemical structure of 12-O-tetradecanoylphorbol-13-acetate, a phorbol ester

Phorbol esters are a class of chemical compounds found in a variety of plants, particularly in the families Euphorbiaceae and Thymelaeaceae.[1][2] Chemically, they are ester derivatives of the tetracyclic diterpenoid phorbol.

## Biological activity

Protein kinase C (PKC) is a phorbol ester receptor.[2][3] Phorbol esters can stimulate PKC in a similar way to diglycerides.[2][3]

Phorbol esters are known for their ability to promote tumors.[2] In particular, 12-O-tetradecanoylphorbol-13-acetate (TPA) is used as a biomedical research tool in models of carcinogenesis.[4][5]

Plants that contain phorbol esters are often poisonous.[5]

## References

1. ↑ Goel, G; Makkar, H. P.; Francis, G; Becker, K (2007). "Phorbol esters: Structure, biological activity, and toxicity in animals". International Journal of Toxicology 26 (4): 279–88. doi:10.1080/10915810701464641. PMID 17661218.
2. ↑ 2.0 2.1 2.2 2.3 Evans, Gerald A.; Farrar, William L. (1998-01-01), Delves, Peter J., ed. (in en), Phorbol Esters, Oxford: Elsevier, pp. 1940–1942, doi:10.1006/rwei.1999.0488, ISBN 978-0-12-226765-9, http://www.sciencedirect.com/science/article/pii/B012226765600503X, retrieved 2020-11-26
3. ↑ 3.0 3.1 Weimer, R.; Richmond, J. (2015-01-01), "Munc13 and Associated Molecules☆" (in en), Reference Module in Biomedical Sciences (Elsevier), doi:10.1016/b978-0-12-801238-3.04674-2, ISBN 978-0-12-801238-3, http://www.sciencedirect.com/science/article/pii/B9780128012383046742, retrieved 2020-11-26
4. ↑ Emerit, Ingrid; Cerutti, Peter A. (1981). "Tumour promoter phorbol-12-myristate-13-acetate induces chromosomal damage via indirect action". Nature 293 (5828): 144–6. doi:10.1038/293144a0. PMID 7266668. Bibcode: 1981Natur.293..144E.
5. ↑ 5.0 5.1 Abdel-Fatta Rizk (1990). Poisonous Plant Contamination of Edible Plants. CRC Press. pp. 43–44. ISBN 9780849363696.

* v
* t
* e

TRP channel modulators

TRPA|

| Activators|

* 4-Hydroxynonenal
* 4-Oxo-2-nonenal
* 4,5-EET
* 12S-HpETE
* 15-Deoxy-Δ12,14-prostaglandin J2
* α-Sanshool (ginger, Sichuan and melegueta peppers)
* Acrolein
* Allicin (garlic)
* Allyl isothiocyanate (mustard, radish, horseradish, wasabi)
* AM404
* Bradykinin
* Cannabichromene (cannabis)
* Cannabidiol (cannabis)
* Cannabigerol (cannabis)
* Cinnamaldehyde (cinnamon)
* CR gas (dibenzoxazepine; DBO)
* CS gas (2-chlorobenzal malononitrile)
* Curcumin (turmeric)
* Dehydroligustilide (celery)
* Diallyl disulfide
* Dicentrine (Lindera spp.)
* Farnesyl thiosalicylic acid
* Formalin
* Gingerols (ginger)
* Hepoxilin A3
* Hepoxilin B3
* Hydrogen peroxide
* Icilin
* Isothiocyanate
* Ligustilide (celery, Angelica acutiloba)
* Linalool (Sichuan pepper, thyme)
* Methylglyoxal
* Methyl salicylate (wintergreen)
* N-Methylmaleimide
* Nicotine (tobacco)
* Oleocanthal (olive oil)
* Paclitaxel (Pacific yew)
* Paracetamol (acetaminophen)
* PF-4840154
* Phenacyl chloride
* Polygodial (Dorrigo pepper)
* Shogaols (ginger, Sichuan and melegueta peppers)
* Tear gases
* Tetrahydrocannabinol (cannabis)
* Thiopropanal S-oxide (onion)
* Umbellulone (Umbellularia californica)
* WIN 55,212-2

|

Blockers|

* Dehydroligustilide (celery)
* Nicotine (tobacco)
* Ruthenium red

TRPC|

| Activators|

* Adhyperforin (St John's wort)
* Diacyl glycerol
* GSK1702934A
* Hyperforin (St John's wort)
* Substance P

|

Blockers|

* DCDPC
* DHEA-S
* Flufenamic acid
* GSK417651A
* GSK2293017A
* Meclofenamic acid
* N-(p-Amylcinnamoyl)anthranilic acid
* Niflumic acid
* Pregnenolone sulfate
* Progesterone
* Pyr3
* Tolfenamic acid

TRPM|

| Activators|

* ADP-ribose
* BCTC
* Calcium (intracellular)
* Cold
* Coolact P
* Cooling Agent 10
* CPS-369
* Eucalyptol (eucalyptus)
* Frescolat MGA
* Frescolat ML
* Geraniol
* Hydroxycitronellal
* Icilin
* Linalool
* Menthol (mint)
* PMD 38
* Pregnenolone sulfate
* Rutamarin (Ruta graveolens)
* Steviol glycosides (e.g., stevioside) (Stevia rebaudiana)
* Sweet tastants (e.g., glucose, fructose, sucrose; indirectly)
* Thio-BCTC
* WS-3
* WS-12
* WS-23

|

Blockers|

* Capsazepine
* Clotrimazole
* DCDPC
* Elismetrep
* Flufenamic acid
* Meclofenamic acid
* Mefenamic acid
* N-(p-Amylcinnamoyl)anthranilic acid
* Nicotine (tobacco)
* Niflumic acid
* Ruthenium red
* Rutamarin (Ruta graveolens)
* Tolfenamic acid
* TPPO

TRPML|

| Activators|

* MK6-83
* PI(3,5)P2
* SF-22

|

TRPP|

| Activators|

* Triptolide (Tripterygium wilfordii)

|

Blockers|

* Ruthenium red

TRPV|

| Activators|

* 2-APB
* 5',6'-EET
* 9-HODE
* 9-oxoODE
* 12S-HETE
* 12S-HpETE
* 13-HODE
* 13-oxoODE
* 20-HETE
* α-Sanshool (ginger, Sichuan and melegueta peppers)
* Allicin (garlic)
* AM404
* Anandamide
* Bisandrographolide (Andrographis paniculata)
* Camphor (camphor laurel, rosemary, camphorweed, African blue basil, camphor basil)<!--TRPV1 and TRPV3-->
* Cannabidiol (cannabis)
* Cannabidivarin (cannabis)
* Capsaicin (chili pepper)
* Carvacrol (oregano, thyme, pepperwort, wild bergamot, others)
* DHEA
* Diacyl glycerol
* Dihydrocapsaicin (chili pepper)
* Estradiol
* Eugenol (basil, clove)
* Evodiamine (Euodia ruticarpa)
* Gingerols (ginger)
* GSK1016790A
* Heat
* Hepoxilin A3
* Hepoxilin B3
* Homocapsaicin (chili pepper)
* Homodihydrocapsaicin (chili pepper)
* Incensole (incense)
* Lysophosphatidic acid
* Low pH (acidic conditions)
* Menthol (mint)
* N-Arachidonoyl dopamine
* N-Oleoyldopamine
* N-Oleoylethanolamide
* Nonivamide (PAVA) (PAVA spray)
* Nordihydrocapsaicin (chili pepper)
* Paclitaxel (Pacific yew)
* Paracetamol (acetaminophen)
* Phorbol esters (e.g., 4α-PDD)
* Piperine (black pepper, long pepper)
* Polygodial (Dorrigo pepper)
* Probenecid
* Protons
* RhTx
* Rutamarin (Ruta graveolens)
* Resiniferatoxin (RTX) (Euphorbia resinifera/pooissonii)
* Shogaols (ginger, Sichuan and melegueta peppers)
* Tetrahydrocannabivarin (cannabis)
* Thymol (thyme, oregano)
* Tinyatoxin (Euphorbia resinifera/pooissonii)
* Tramadol
* Vanillin (vanilla)
* Zucapsaicin

|

Blockers|

* α-Spinasterol (Vernonia tweediana)
* AMG-517
* Asivatrep
* BCTC
* Cannabigerol (cannabis)
* Cannabigerolic acid (cannabis)
* Cannabigerovarin (cannabis)
* Cannabinol (cannabis)
* Capsazepine
* DCDPC
* DHEA
* DHEA-S
* Flufenamic acid
* GRC-6211
* HC-067047
* Lanthanum
* Mavatrep
* Meclofenamic acid
* N-(p-Amylcinnamoyl)anthranilic acid
* NGD-8243
* Niflumic acid
* Pregnenolone sulfate
* RN-1734
* RN-9893
* Ruthenium red
* SB-705498
* Tivanisiran
* Tolfenamic acid

See also: Receptor/signaling modulators • Ion channel modulators

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*[TRP]: Transient receptor potential
*[TRPA]: Transient receptor potential ankyrin channel
*[TRPC]: Transient receptor potential canonical channel
*[TRPM]: Transient receptor potential melastatin channel
*[TRPML]: Transient receptor potential mucolipin channel
*[TRPP]: Transient receptor potential polycystin channel
*[TRPV]: Transient receptor potential vanilloid channel