Asparaginase

Asparaginase
Clinical data
Pregnancy; category	US: C (Risk not ruled out) ; ;
ATC code	L01XX02 (WHO) ;
Pharmacokinetic data
Elimination half-life	8-30 hrs
Identifiers
	IUPAC name E. coli L-asparagine amidohydrolase;
CAS Number	9015-68-3;
DrugBank	BTD00011;
E number	{{#property:P628}}
ECHA InfoCard	{{#property:P2566}}Lua error in Module:EditAtWikidata at line 36: attempt to index field 'wikibase' (a nil value).
Chemical and physical data
Formula	C1377H2208N382O442S17
Molar mass	31731.9 g/mol

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

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Asparaginase (EC 3.5.1.1) is an enzyme that catalyzes the hydrolysis of asparagine to aspartic acid. It is also marketed under the brand names Elspar®, Oncaspar, and Erwinase to treat acute lymphoblastic leukemia (ALL) and is also used in some mast cell tumor protocols. ^[1] Unlike other chemotherapy agents, it can be given as an intramuscular, subcutaneous, or intravenous injection without fear of tissue irritation.

Mechanism of action

The rationale behind asparaginase is that it takes advantage of the fact that ALL leukemic cells are unable to synthesize the non-essential amino acid asparagine whereas normal cells are able to make their own asparagine. These leukemic cells depend on circulating asparagine. Asparaginase however catalyzes the conversion of L-asparagine to aspartic acid and ammonia. This deprives the leukemic cell of circulating asparagine.

Side effects

The main side effect is an allergic or hypersensitivity reaction. Asparaginase has also been associated with pancreatitis. Additionally, it can also be associated with a coagulopathy as it decreases protein synthesis, including synthesis of coagulation factors and anticoagulant factor, leading to bleeding or thrombotic events such as stroke.

References

↑ Appel IM, van Kessel-Bakvis C, Stigter R, Pieters R (2007). "Influence of two different regimens of concomitant treatment with asparaginase and dexamethasone on hemostasis in childhood acute lymphoblastic leukemia". doi:10.1038/sj.leu.2404793. PMID 17554375.

External links

Asparaginase at the US National Library of Medicine Medical Subject Headings (MeSH)

[2] THE PET PHARMACY By Wendy C. Brooks, DVM, DipABVP; Educational Director, VeterinaryPartner.com

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de:Asparaginase

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[pmid17554375-1] Appel IM, van Kessel-Bakvis C, Stigter R, Pieters R (2007). "Influence of two different regimens of concomitant treatment with asparaginase and dexamethasone on hemostasis in childhood acute lymphoblastic leukemia". doi:10.1038/sj.leu.2404793. PMID 17554375.

[1]

v t e Chemotherapeutic agents/Antineoplastic agents (L01)
Alkylating and alkylating-like agents	Nitrogen mustards: (Chlorambucil, Chlormethine, Cyclophosphamide, Ifosfamide, Melphalan, Bendamustine, Uramustine) Nitrosoureas:(Carmustine, Fotemustine, Lomustine, Streptozocin) Platinum (alkylating-like): (Carboplatin, Cisplatin, Oxaliplatin, Triplatin tetranitrate, Satraplatin) Alkyl sulfonates:(Busulfan, Treosulfan) Hydrazines:(Procarbazine, Dacarbazine, Temozolomide) Aziridines:(ThioTEPA)
Antimetabolites	Folic acid: (Aminopterin, Methotrexate, Pemetrexed, Raltitrexed). Purine:(Cladribine, Clofarabine, Fludarabine, Mercaptopurine, Pentostatin, Thioguanine) Pyrimidine:(Capecitabine, Cytarabine, Decitabine, Fluorouracil, Floxuridine, Gemcitabine)
Spindle poison/mitotic inhibitor	Taxane: (Docetaxel, Larotaxel, Paclitaxel). Vinca: (Vinblastine, Vincristine, Vindesine, Vinorelbine).
Cytotoxic/antitumor antibiotics	Anthracycline family: (Daunorubicin, Doxorubicin, Epirubicin, Idarubicin, Mitoxantrone, Pixantrone, Valrubicin) streptomyces (Actinomycin, Bleomycin, Mitomycin, Plicamycin) - Hydroxyurea
Topoisomerase inhibitors	Camptotheca: (Camptothecin, Topotecan, Irinotecan, Rubitecan), Podophyllum:(Etoposide, Teniposide)
CI monoclonal antibodies	Receptor tyrosine kinase (Cetuximab, Panitumumab, Trastuzumab) - CD20 (Rituximab, Tositumomab) - other (Alemtuzumab, Bevacizumab, Gemtuzumab)
Photosensitizers	Aminolevulinic acid, Methyl aminolevulinate, Porfimer sodium, Verteporfin
Tyrosine kinase inhibitors	Axitinib, Bosutinib, Cediranib, Dasatinib, Erlotinib, Gefitinib, Imatinib, Lapatinib, Lestaurtinib, Nilotinib, Semaxanib, Sorafenib, Sunitinib, Vandetanib
Cyclin-dependent kinase inhibitor	Seliciclib
Other	retinoids (Alitretinoin, Tretinoin), Fusion protein (Aflibercept) - Altretamine, Amsacrine, Anagrelide, Arsenic trioxide, Asparaginase (Pegaspargase), Bexarotene, Bortezomib, Celecoxib, Denileukin diftitox, Elesclomol, Estramustine, Irofulven, Ixabepilone, Masoprocol, Mitotane, Oblimersen, Testolactone, Tipifarnib, Trabectedin

v t e Hydrolases: carbon-nitrogen non-peptide (EC 3.5)
3.5.1: Linear amides / Amidohydrolases	Asparaginase Glutaminase Urease Biotinidase Aspartoacylase Ceramidase Aspartylglucosaminidase Fatty acid amide hydrolase Histone deacetylase Sirtuin
3.5.2: Cyclic amides/ Amidohydrolases	Barbiturase Beta-lactamase
3.5.3: Linear amidines/ Ureohydrolases	Arginase Agmatinase Protein-arginine deiminase
3.5.4: Cyclic amidines/ Aminohydrolases	Guanine deaminase Adenosine deaminase AMP deaminase Inosine monophosphate synthase DCMP deaminase GTP cyclohydrolase I Cytidine deaminase AICDA Activation-induced cytidine deaminase
3.5.5: Nitriles/ Aminohydrolases	Nitrilase
3.5.99: Other	Riboflavinase Thiaminase II

Asparaginase

Contents

Mechanism of action

Side effects

References

External links

Navigation menu

Clinical data
Pregnancy category	US: C (Risk not ruled out)
ATC code	L01XX02 (WHO)
Pharmacokinetic data
Elimination half-life	8-30 hrs
Identifiers
IUPAC name E. coli L-asparagine amidohydrolase
CAS Number	9015-68-3
DrugBank	BTD00011
E number	{{#property:P628}}
ECHA InfoCard	{{#property:P2566}}Lua error in Module:EditAtWikidata at line 36: attempt to index field 'wikibase' (a nil value).
Chemical and physical data
Formula	C₁₃₇₇H₂₂₀₈N₃₈₂O₄₄₂S₁₇
Molar mass	31731.9 g/mol