Mitomycin C

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Mitomycin C
Mitomycin.svg
Skeletal formula
Mitomycin-C-from-xtal-3D-bs-17.png
Ball-and-stick model of the molecular structure determined by X-ray crystallography [1]
Clinical data
Trade names Mitosol, Mutamycin, Jelmyto
Other namesUGN-101
AHFS/Drugs.com Monograph
MedlinePlus a682415
License data
Pregnancy
category
Routes of
administration 		Intravenous, topical
Drug class Antineoplastic agent
ATC code
Legal status
Legal status
Pharmacokinetic data
Metabolism Liver
Elimination half-life 8–48 min
Identifiers
  • {11-Amino-7-methoxy-12-methyl-10,13-dioxo-2,5-diazatetracyclo[7.4.0.02,7.04,6]trideca-1(9),11-dien-8-yl}methyl carbamate
CAS Number
PubChem CID
PubChemSID
IUPHAR/BPS
DrugBank
ChemSpider
UNII
KEGG
ChEBI
ChEMBL
CompTox Dashboard (EPA)
ECHA InfoCard 100.000.008 OOjs UI icon edit-ltr-progressive.svg
Chemical and physical data
Formula C15H18N4O5
Molar mass 334.332 g·mol−1
3D model (JSmol)
Melting point 360 °C (680 °F)
Solubility in water 8.43 g L−1
  • CO[C@@]12[C@H](COC(N)=O)C3=C(C(=O)C(C)=C(N)C3=O)N1C[C@@H]1N[C@@H]12
  • InChI=1S/C15H18N4O5/c1-5-9(16)12(21)8-6(4-24-14(17)22)15(23-2)13-7(18-13)3-19(15)10(8)11(5)20/h6-7,13,18H,3-4,16H2,1-2H3,(H2,17,22)/t6-,7+,13+,15-/m1/s1 Yes check.svgY
  • Key:NWIBSHFKIJFRCO-WUDYKRTCSA-N

Mitomycin C is a mitomycin that is used as a chemotherapeutic agent by virtue of its antitumour activity.

Contents

Medical uses

It is given intravenously to treat upper gastro-intestinal cancers (e.g. esophageal carcinoma), anal cancers, and breast cancers, as well as by bladder instillation for superficial bladder tumours.

Mitomycin C has also been used topically rather than intravenously in several areas. The first is cancers, particularly bladder cancers and intraperitoneal tumours. It is now well known that a single instillation of this agent within 6 hours of bladder tumor resection can prevent recurrence. The second is in eye surgery where mitomycin C 0.02% is applied topically to prevent scarring during glaucoma filtering surgery and to prevent haze after PRK or LASIK; mitomycin C has also been shown to reduce fibrosis in strabismus surgery. [6] The third is in esophageal and tracheal stenosis where application of mitomycin C onto the mucosa immediately following dilatation will decrease re-stenosis by decreasing the production of fibroblasts and scar tissue.

In April 2020, mitomycin gel, sold under the brand name Jelmyto, was approved in the United States for the treatment of low-grade upper tract urothelial cancer (UTUC). [7] [8] [9] Urothelial cancer is a cancer of the lining of the urinary system. [7]

Mitomycin is also used as a chemotherapeutic agent in glaucoma surgery.

Contraindications

Pregnant women should not take mitomycin gel because it may cause harm to a developing fetus or newborn baby. [7]

Side effects

It causes delayed bone marrow toxicity and therefore it is usually administered at 6-weekly intervals. Prolonged use may result in permanent bone-marrow damage. It may also cause lung fibrosis and renal damage.

Anticancer treatments with chemotherapeutic agents often impair brain cell function leading to memory loss and cognitive dysfunction. In order to understand the basis of these impairments, mice were treated with mitomycin C, a chemotherapeutic agent, and cells of the prefrontal cortex were examined. [10] This treatment resulted in an increase of the oxidative DNA damage 8-oxo-dG, a decrease in the enzyme OGG1 that ordinarily repairs such damage and epigenetic alterations. These alterations at the DNA level may explain, at least in part, the impairments of cognitive function after chemotherapy. [11]

Common side effects are ureteric obstruction (narrowing or blockage of the ureter that may lead to excess fluid in the kidney due to a backup of urine), flank pain (pain occurring on the side of the body), urinary tract infection, hematuria (blood in the urine), renal dysfunction (inability of the kidney to function in its designed capacity), fatigue, nausea, abdominal pain, dysuria (painful or difficult urination) and vomiting. [7]

Pharmacology

Mitomycin C is a potent DNA crosslinker. A single crosslink per genome has shown to be effective in killing bacteria. This is accomplished by reductive activation of mitomycin to form a mitosene, which reacts successively via N-alkylation of two DNA bases. Both alkylations are sequence specific for a guanine nucleoside in the sequence 5'-CpG-3'. [12]

Mitomycin gel is an alkylating drug, meaning it inhibits the transcription of DNA into RNA, stopping protein synthesis and taking away the cancer cell's ability to multiply. [7]

History

Mitomycin was discovered in 1955 by Japanese scientists in cultures of the microorganism Streptomyces caespitosus . [12] Mitomycin C was isolated as purple crystals by Wakaki and his coworkers from Kyowa Hakko Kogyo in 1956. [13]

It was approved based on the results of the OLYMPUS (NCT02793128) multicenter trial involving 71 subjects with low-grade UTUC. [7] [8] These subjects had never undergone treatment (treatment-naïve) or had recurrent low-grade non-invasive UTUC with at least one measurable papillary tumor (a tumor shaped like a small mushroom with its stem attached to the inner lining of an organ) located above the ureteropelvic junction. [7] [8] Subjects received mitomycin gel once a week (mitomycin gel 4 mg per mL instillations via ureteral catheter or nephrostomy tube) for six weeks and, if assessed as a complete response (complete disappearance of the papillary tumor), monthly for up to eleven additional months. [7] [8] Efficacy of mitomycin gel was evaluated using urine cytology (a test to look for abnormal cells in a subjects's urine), ureteroscopy (an examination of the upper urinary tract) and biopsy (if warranted) three months following the initiation of therapy. [7]

The primary endpoint was complete response at three months following initiation of therapy. [7] [8] A complete response was found in 41 of the 71 subjects (58%) following six treatments of mitomycin gel administered weekly. [7] [8] Durability of the effect of mitomycin gel in subjects with a complete response was also evaluated using urine cytology, ureteroscopy and biopsy (if warranted) every three months for a year following the initiation of therapy. [7] [8] Nineteen subjects (46%) who achieved a complete response continued to have a complete response at the twelve-month mark. [7] [8]

The US Food and Drug Administration (FDA) granted the application for mitomycin gel priority review along with breakthrough therapy, fast track, and orphan drug designations. [7] The FDA granted approval of Jelmyto to UroGen Pharma, Inc. [7]

Research

Potential bis-alkylating heterocyclic quinones were synthesised in order to explore their antitumoral activities by bioreductive alkylation. [14]

In the bacterium Legionella pneumophila , mitomycin C induces competence, a condition necessary for the process of natural transformation that transfers DNA and promotes recombination between cells. [15] Exposure of the fruitfly Drosophila melanogaster to mitomycin C increases recombination during meiosis, a key stage of the sexual cycle. [16] It has been suggested that during sexual process in prokaryotes (transformation) and eukaryotes (meiosis) DNA cross-links and other damages introduced by mitomycin C may be removed by recombinational repair. [17]

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References

  1. ↑ Reiss GJ (2011). "KUWQIF: Mitomycin C Dihydrate, also known as (6-amino-8a-methoxy-5-methyl-4,7-dioxo-1,1a,2,4,7,8,8a,8b-octahydroazireno[2',3':3,4]pyrrolo[1,2-a]indol-8-yl)methyl carbamate dihydrate". Cambridge Structural Database: Access Structures. Cambridge Crystallographic Data Centre. doi:10.5517/ccdc.csd.cc12bt29. Archived from the original on 19 November 2021. Retrieved 3 November 2021.
  2. ↑ "Mitomycin (Mutamycin) Use During Pregnancy". Drugs.com. 19 August 2019. Archived from the original on 22 October 2020. Retrieved 15 April 2020.
  3. ↑ "Mitocin mitomycin 20 mg powder for injection vial (370360)". Therapeutic Goods Administration (TGA). 12 August 2022. Archived from the original on 18 March 2023. Retrieved 29 April 2023.
  4. ↑ "Mitocin (Echo Therapeutics Pty Ltd)". Therapeutic Goods Administration (TGA). 28 September 2022. Archived from the original on 18 March 2023. Retrieved 29 April 2023.
  5. ↑ "FDA-sourced list of all drugs with black box warnings (Use Download Full Results and View Query links.)". nctr-crs.fda.gov. FDA . Retrieved 22 October 2023.
  6. ↑ Kersey JP, Vivian AJ (July–September 2008). "Mitomycin and amniotic membrane: a new method of reducing adhesions and fibrosis in strabismus surgery". Strabismus. 16 (3): 116–118. doi:10.1080/09273970802405493. PMID   18788060. S2CID   32321781.
  7. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 "FDA Approves First Therapy for Treatment of Low-Grade Upper Tract Urothelial Cancer". U.S. Food and Drug Administration (FDA) (Press release). 15 April 2020. Archived from the original on 15 April 2020. Retrieved 15 April 2020.PD-icon.svg This article incorporates text from this source, which is in the public domain .
  8. 1 2 3 4 5 6 7 8 "FDA approves mitomycin for low-grade upper tract urothelial cancer". U.S. Food and Drug Administration (FDA). 15 April 2020. Archived from the original on 15 April 2020. Retrieved 15 April 2020.PD-icon.svg This article incorporates text from this source, which is in the public domain .
  9. ↑ "Jelmyto: FDA-Approved Drugs". U.S. Food and Drug Administration (FDA). Archived from the original on 15 April 2020. Retrieved 15 April 2020.
  10. ↑ Kovalchuk A, Rodriguez-Juarez R, Ilnytskyy Y, Byeon B, Shpyleva S, Melnyk S, et al. (April 2016). "Sex-specific effects of cytotoxic chemotherapy agents cyclophosphamide and mitomycin C on gene expression, oxidative DNA damage, and epigenetic alterations in the prefrontal cortex and hippocampus - an aging connection". Aging. 8 (4): 697–711. doi:10.18632/aging.100920. PMC   4925823 . PMID   27032448.
  11. ↑ Kovalchuk A, Kolb B (July 2017). "Chemo brain: From discerning mechanisms to lifting the brain fog-An aging connection". Cell Cycle. 16 (14): 1345–1349. doi:10.1080/15384101.2017.1334022. PMC   5539816 . PMID   28657421.
  12. 1 2 Tomasz M (September 1995). "Mitomycin C: small, fast and deadly (but very selective)". Chemistry & Biology. 2 (9): 575–579. doi: 10.1016/1074-5521(95)90120-5 . PMID   9383461.
  13. ↑ Wakaki S, Marumo H, Tomioka K, Shimizu G, Kato E, Kamada H, et al. (May 1958). "Isolation of new fractions of antitumor mitomycins". Antibiotics & Chemotherapy. 8 (5): 228–240. PMID   24544727.
  14. ↑ Renault J, Baron M, Mailliet P, Giorgirenault S, Paoletti C, Cros S (1981). "Heterocyclic quinones 2. Quinoxaline-5,6-(and 5-8)-diones - Potential antitumoral agents". Eur. J. Med. Chem. 16 (6): 545–550.
  15. ↑ Charpentier X, Kay E, Schneider D, Shuman HA (March 2011). "Antibiotics and UV radiation induce competence for natural transformation in Legionella pneumophila". Journal of Bacteriology. 193 (5): 1114–1121. doi:10.1128/JB.01146-10. PMC   3067580 . PMID   21169481.
  16. ↑ Schewe MJ, Suzuki DT, Erasmus U (July 1971). "The genetic effects of mitomycin C in Drosophila melanogaster. II. Induced meiotic recombination". Mutation Research. 12 (3): 269–279. doi:10.1016/0027-5107(71)90015-7. PMID   5563942.
  17. ↑ Bernstein H, Bernstein C, Michod RE (February 2012). "DNA repair as the primary adaptive function of sex in bacteria and eukaryotes.". In Kimura S, Shimizu S (eds.). DNA Repair: New Research. Hauppauge, N.Y.: Nova Sci. Publ. pp. 1–49. ISBN   978-1-62100-808-8.
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