User:MySmarterSelf/MPH-220

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MPH-220
Names
IUPAC name
S-4a-hydroxy-2-methyl-7-(4-morpholinophenyl)-4a,5,6,7-tetrahydro-4H-pyrrolo[2,3-b]thieno[3,2-e]pyridine-4-one
Identifiers
Properties
C20H21N3O3S
Molar mass 383.47 g·mol−1
Appearance orange solid
50 μM
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).


MPH-220 is a first-in-class anti-spastic drug candidate.

Mechanism of action[edit]

MPH-220 relaxes skeletal muscle by inhibiting directly myosin ATPase activity and this way acto-myosin based motility. It binds halfway between the nucleotide binding pocket and the actin binding cleft of myosin (blebbistatin binding site), predominantly in an actin detached conformation. This type of inhibition relaxes the acto-myosin myofilaments.[1]

Specificity[edit]

MPH-220 co-crystallized with skeletal muscle myosin
MPH-220 co-crystallized with skeletal muscle myosin

A single amino acid difference between cardiac and skeletal muscle myosin-2 isoforms is responsible for the high selectivity of MPH-220.[1]

Drug development status[edit]

MPH-220 is in preclinical phase of drug-development. Planned to enter clinical phase 1 soon sponsored by Motorpharma Ltd. [2]


References[edit]

  1. ^ a b Gyimesi, Máté; Horváth, Ádám I.; Túrós, Demeter; Suthar, Sharad Kumar; Pénzes, Máté; Kurdi, Csilla; Canon, Louise; Kikuti, Carlos; Ruppel, Kathleen M.; Trivedi, Darshan V.; Spudich, James A. (2020-10-15). "Single Residue Variation in Skeletal Muscle Myosin Enables Direct and Selective Drug Targeting for Spasticity and Muscle Stiffness". Cell. 183 (2): 335–346.e13. doi:10.1016/j.cell.2020.08.050. ISSN 1097-4172. PMC 7596007. PMID 33035452.
  2. ^ "Motorpharma website".{{cite web}}: CS1 maint: url-status (link)

External links[edit]