II. Mechanism

  1. Alkylating Agents are not Cell Cycle specific
  2. Exert cytotoxic effects via transfer of unstable alkyl group
    1. DNA alkylation (key to cellular lethality, esp. DNA cross linking)
    2. Chemically react with other cellular constituents (e.g. Proteins)
  3. Replicating cells and rapidly growing cells are most susceptible to agents (related to adverse effects)
    1. Blood cell precursors
    2. Hair cells
    3. Gastrointestinal cells
  4. Cancer resistance mechanisms
    1. Decreased Chemotherapeutic Drug uptake
    2. Repair of DNA damage

III. Medications

  1. Nitrogen Mustard Antineoplastic Compounds (Bis -chloroethyl- amines)
    1. Bendamustine
    2. Chlorambucil
    3. Cyclophosphamide (prodrug, activated in liver)
    4. Ifosfamide (prodrug, activated in liver)
    5. Mechlorethamine
    6. Melphalan
  2. Nitrosourea Compounds
    1. Carmustine (BCNU)
    2. Lomustine (CCNU)
    3. Semustine (Methyl-CCNU)
    4. Streptozocin
  3. Aziridines (Ethyleneimine)
    1. Thiotepa
    2. Triethylenemelamine
  4. Mesylate (Alkylsulfonate)
    1. Busulfan
  5. Triazene Antineoplastic
    1. Procarbazine
    2. Dacarbazine
    3. Temozolamide
  6. Platinum Analogs
    1. Carboplatin
    2. Cisplatin
    3. Oxaliplatin
  7. Other drugs causing alkylation
    1. Hexamethylmelamine
    2. Trabectedin

IV. References

  1. Olson (2020) Clinical Pharmacology, Medmaster, Miami, Fl, p. 126
  2. Amjad (2023) Cancer Chemotherapy, StatPearls, Treasure Island, Fl, accessed 2/1/3/2024
    1. https://www.ncbi.nlm.nih.gov/books/NBK564367/

Images: Related links to external sites (from Bing)

Related Studies

Ontology: Alkanesulfonates (C0002072)

Definition (CSP) any compound of the type R-SO3-.
Definition (MSH) Organic esters or salts of sulfonic acid derivatives containing an aliphatic hydrocarbon radical.
Concepts Organic Chemical (T109)
MSH D000476
English Alkyl Sulfonates, Sulfonates, Alkyl, alkyl sulfonate, Alkanesulfonates [Chemical/Ingredient], sulfonate, sulfonated, sulfonates, Alkanesulfonates, alkylsulfonate
Swedish Alkansulfonater
Czech alkylsulfonany
Finnish Alkaanisulfonaatit
Italian Alchilsolfonati, Alcansolfonati
Russian ALKILSUL'FONATY, ALKANSUL'FONATY, АЛКАНСУЛЬФОНАТЫ, АЛКИЛСУЛЬФОНАТЫ
French Alcanesulfonates
Croatian Not Translated[Alkanesulfonates]
Polish Alkanosulfoniany
Japanese アルカンスルホン酸塩, アルカンスルホン酸エステル, アルカンスルホナート, アルキルスルホン酸エステル, アルキルスルホナート, アルキルスルホン酸塩
German Alkansulfonate, Alkylsulfonate
Portuguese Alcanossulfonatos, Sulfonatos de Alquila
Spanish Alcanosulfonatos, Sulfonatos de Alquilo

Ontology: Alkylating Agents (C0002073)

Definition (NCI) Agents that replace hydrogen atom(s) in biologically active molecules with alky radical(s), hindering proper function. Alkylating agents exhibit cytotoxic effects through the alkylation of DNA, resulting in strand cross-linking, ultimately inhibiting DNA replication and cell growth.
Definition (NCI_NCI-GLOSS) A type of drug that is used in the treatment of cancer. It interferes with the cell's DNA and inhibits cancer cell growth.
Definition (MSH) Highly reactive chemicals that introduce alkyl radicals into biologically active molecules and thereby prevent their proper functioning. Many are used as antineoplastic agents, but most are very toxic, with carcinogenic, mutagenic, teratogenic, and immunosuppressant actions. They have also been used as components in poison gases.
Definition (CSP) chemical agent that can add alkyl groups (for example, ethyl or methyl groups) to another molecule; many mutagens act through alkylation.
Concepts Pharmacologic Substance (T121) , Hazardous or Poisonous Substance (T131)
MSH D000477
SnomedCT 19768003, 372669002
English Agents, Alkylating, Alkylators, alkylating agents, alkylating agents (medication), Alkylating Agents, alkylating drug, alkylating drugs, agents alkylating, ALKYLATING AGENTS, Alkylating agents, Alkylating drugs, Alkylating agent (product), Alkylating agent (substance), Alkylating agent, alkylating agent, Alkylating agent, NOS, Alkylating Agent, Alkylator
French Alkylants, Agents alkoylants, Agents alkylants, Alcoylants, Agents alcoylants
Swedish Alkylerande medel
Czech alkylační látky
Finnish Alkyloivat aineet
Russian ALKILIRUIUSHCHIE SREDSTVA, АЛКИЛИРУЮЩИЕ СРЕДСТВА
Japanese アルキル化剤, アルキル化薬
Croatian ALKILIRAJUĆA SREDSTVA
Polish Leki alkilujące
Spanish Alquilantes, Agentes Alquilantes, Agentes Alcoylantes, agente alquilante (producto), agente alquilante (sustancia), agente alquilante
Italian Alchilanti, Agenti alchilanti
Portuguese Agentes Alquilantes, Agentes Alcoilantes, Alquilantes
German Alkylierende Stoffe

Ontology: Mesylates (C0025619)

Definition (MSH) Organic salts or esters of methanesulfonic acid.
Definition (CSP) corrosive, toxic acid or its salts or esters, used as a catalyst and as a solvent.
Concepts Organic Chemical (T109)
MSH D008698
English Methanesulfonates, Methylenesulfonates, Mesylates, methane sulfonate, Mesylates [Chemical/Ingredient], mesylate, mesylates, mesilate, Mesilates, Mesylate, Mesilate
Swedish Mesylater
Czech methansulfonáty
Finnish Mesylaatit
Russian METANSUL'FONATY, METILSUL'FONATY, METILENSUL'FONATY, MEZILATY, МЕЗИЛАТЫ, МЕТАНСУЛЬФОНАТЫ, МЕТИЛЕНСУЛЬФОНАТЫ, МЕТИЛСУЛЬФОНАТЫ
Croatian Not Translated[Mesylates]
Polish Metylosulfoniany, Mesylates
Japanese メシラート, メシル酸塩, メタンスルホナート, メチレンスルフォネート, メシレート, メタンスルホネート, メタンスルホン酸塩, メチレンスルホネート, メチレンスルホン酸塩
French Mésylates, Mésilates, Méthanesulfonates
German Mesylate, Methansulfonate, Mesilat
Italian Mesilati
Portuguese Mesilato, Mesilatos, Metanossulfonatos
Spanish Mesilato, Mesilatos, Metanosulfonatos

Ontology: Nitrosourea Compounds (C0028210)

Definition (NCI) Any of a class of alkylating agents that contain both a nitroso group and a urea. They are lipophilic and can cross the blood-brain barrier.
Definition (NCI_NCI-GLOSS) An anticancer drug that can cross the blood-brain barrier. Carmustine and lomustine are nitrosoureas.
Concepts Organic Chemical (T109) , Pharmacologic Substance (T121)
MSH D009607
SnomedCT 349843000, 372610009
English Compounds, Nitrosourea, Nitrosourea Compounds, NITROSOUREA CPDS, Nitrosourea Compounds [Chemical/Ingredient], nitrosoureas, nitrosurea, nitrosureas, Nitrosureas, Nitrosureas (product), Nitrosureas (substance), nitrosourea, Nitrosoureas, Nitrosourea Compound
Swedish Nitrosureaföreningar
Czech nitrosomočovinové sloučeniny
Finnish Nitrosoureayhdisteet
Russian NITROZOMOCHEVINY SOEDINENIIA, НИТРОЗОМОЧЕВИНЫ СОЕДИНЕНИЯ
Croatian NITROZOUREJA SPOJEVI
Spanish nitrosureas, nitrosureas (sustancia), nitrosoureas (sustancia), nitrosoureas (producto), nitrosoureas, Compuestos de Nitrosourea
Polish Nitrozomocznika związki
French Nitrosourées, Nitroso-urées
Portuguese Compostos de Nitrosoureia
German Nitrosoharnstoffverbindungen
Italian Composti della nitrosourea

Ontology: aziridine (C0052794)

Definition (NCI) A monofunctional alkylating agent with potential antineoplastic activity. Reacting with DNA mainly at guanine and adenine residues, ethylenimine alkylates DNA, thereby producing DNA interstrand crosslinks and DNA breaks, and interfering with DNA replication and cell division. (NCI04)
Definition (CSP) saturated, 3-membered organic ring system with 1 nitrogen heteroatom.
Concepts Organic Chemical (T109)
MSH C033132
SnomedCT 84212004
LNC LP34809-1, MTHU017187
English aziridine, ethyleneimine, ethylenimine, azacyclopropane, Ethyleneimine, ETHYLENEIMINE, Azacyclopropane, Aziridine, Ethylenimine, Ethylenimine (substance), Azirane, Dimethyleneimine, Dimethylenimine, Ethylimine, Aminoethylene
Spanish azaciclopropano, aziridina, etilenimina (sustancia), etilenimina

Ontology: Triazene antineoplastic (C0360111)

Concepts Pharmacologic Substance (T121) , Organic Chemical (T109)
SnomedCT 349844006, 372611008
English Triazene antineoplastic, Triazene antineoplastic (product), Triazene antineoplastic (substance)
Spanish antineoplásico del grupo triazeno (sustancia), antineoplásico del grupo triazeno, triaceno, agente antineoplásico (producto), triaceno, agente antineoplásico (sustancia), triaceno, agente antineoplásico, triazeno, agente antineoplásico

Ontology: Platinum Antineoplastic Compound (C3536920)

Definition (NCI) A chemotherapy compound that contains a platinum atom. Platinum compounds do not contain alkyl groups but do cause DNA crosslinks and adducts similar to alkylating agents. DNA crosslinks and adducts ultimately lead to the induction of apoptosis.
Concepts Pharmacologic Substance (T121)
English Platinum Antineoplastic Compound, Platinum compounds, antineoplastic drugs, Platinum compounds, Platinum Agents, Platinum Compound

Ontology: Nitrogen Mustard Antineoplastic Compounds (C3537003)

Definition (NCI) A mustard agent containing nitrogen and chlorine atoms.
Concepts Organic Chemical (T109) , Pharmacologic Substance (T121)
SnomedCT 349842005, 372609004
English nitrogen mustards (medication), nitrogen mustard compound, nitrogen mustards, Nitrogen Mustard Compounds [Chemical/Ingredient], Nitrogen Mustard Compounds, Nitrogen Mustard Antineoplastic Compounds, Nitrogen mustard derivative, Nitrogen mustard derivative (product), Nitrogen mustard derivative (substance), Nitrogen Mustard Compound
Spanish derivado de la mostaza nitrogenada (producto), derivado de la mostaza nitrogenada (sustancia), derivado de la mostaza nitrogenada, derivado de mostaza nitrogenada (sustancia), derivado de mostaza nitrogenada