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Application of the 'Hydrogen Bond Wrapping' Concept for the Computer-Aided Drug Discovery of TMPRSS2 Inhibitors
Application of the 'Hydrogen Bond Wrapping' Concept for the Computer-Aided Drug Discovery ...
Application of the 'Hydrogen Bond Wrapping' Concept for the Computer-Aided Drug Discovery of TMPRSS2 Inhibitors

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자료유형  
 학위논문 서양
최종처리일시  
20250211151408
ISBN  
9798342105514
DDC  
540
저자명  
Ugrani, Suraj.
서명/저자  
Application of the Hydrogen Bond Wrapping Concept for the Computer-Aided Drug Discovery of TMPRSS2 Inhibitors
발행사항  
[Sl] : Purdue University, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
92 p
주기사항  
Source: Dissertations Abstracts International, Volume: 86-04, Section: B.
주기사항  
Advisor: Kim, Sangtae.
학위논문주기  
Thesis (Ph.D.)--Purdue University, 2024.
초록/해제  
요약In computer-aided drug discovery, methods that are approximate, but computationally inexpensive play an essential role during the initial phase of the discovery process. Although often inaccurate, they enable the screening of vast drug libraries to identify potential inhibitors with favorable activities, before large amounts of computational resources could be dedicated to studying these individual molecules. This thesis presents such an approach, based on the concept of hydrogen bond wrapping, to study protein-ligand interactions in the context of drug discovery. The 'wrapping' refers to the tendency of hydrophobic groups to surround a hydrogen bond in water, leading to its desolvation, thereby stabilizing it.Herein, a molecular descriptor was employed, which quantifies the extent of hydrophobic wrapping around a protein's backbone hydrogen bonds (BHBs) and could help speed up the discovery process by providing cues for the design or optimization of inhibitors. Additionally, these insights could help tailor not just the binding affinity of inhibitors, but also their specificity toward an intended target protein. The human transmembrane protease serine 2 (TMPRSS2) was used as an illustrative target protein due to the pressing need for COVID-19 therapeutics, and since the current understanding of the binding mechanisms of known TMPRSS2 inhibitors is limited.Molecular docking with a Generalized Born - surface area (GBSA) scoring function was first performed to virtually screen for TMPRSS2 inhibitors. The molecular descriptor was then used to analyze the change in wrapping groups of TMPRSS2 BHBs due to docked ligands, with the aim of identifying BHBs with a high propensity for desolvation. The BHBs involving residues Cys437, Gln438, Asp440, and Ser441 of TMPRSS2 were seen to have some of the largest average increases in wrapping. These general results were also compared to results from docking of the known TMPRSS2 inhibitors, camostat, and nafamostat.The data generated from docking were then used to examine potential applications of the wrapping molecular descriptor using machine learning techniques: (i) for prediction of the solvent-accessible surface area term ΔGsa of the GBSA score using regression and (ii) for classifying the solvent interactions of a TMPRSS2-inhibitor complex as favorable or unfavorable. The descriptor was seen to be only weakly related to ΔGsa; the best-performing regression model had a Pearson correlation coefficient of 0.76 between the predictions and the actual values. The ability of the descriptor to classify solvent interactions was more satisfactory, with a highest value for area under the receiver operating characteristic curve of 0.75.The descriptor was then used to analyze the effect of inhibitor binding on the dynamics of TMPRSS2 BHBs. For this, molecular dynamics simulation was carried out for the uncomplexed TMPRSS2, as well as its complex with known inhibitors and hit molecules from docking. The binding of these ligands was seen to improve the stability of TMPRSS2; certain BHBs which were unstable or not formed in the uncomplexed case, showed increased stability. These prominently included a couple of BHBs identified from docking as having gained a large increase in wrapping. The improved stability coincided with an increase in wrapping groups in several cases. The descriptor also successfully rationalized the desolvation of a few BHBs due to inhibitor binding.
일반주제명  
Crystal structure
일반주제명  
Physics
일반주제명  
Middle East respiratory syndrome
일반주제명  
Hydrogen bonds
일반주제명  
Severe acute respiratory syndrome coronavirus 2
일반주제명  
Prostate cancer
일반주제명  
Solvents
일반주제명  
Water
일반주제명  
Drug development
일반주제명  
Energy
일반주제명  
Viral infections
일반주제명  
Respiratory diseases
일반주제명  
COVID-19
일반주제명  
Oncology
일반주제명  
Pharmaceutical sciences
일반주제명  
Virology
기타저자  
Purdue University.
기본자료저록  
Dissertations Abstracts International. 86-04B.
전자적 위치 및 접속  
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■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a540
■1001  ▼aUgrani,  Suraj.
■24510▼aApplication  of  the  'Hydrogen  Bond  Wrapping'  Concept  for  the  Computer-Aided  Drug  Discovery  of  TMPRSS2  Inhibitors
■260    ▼a[Sl]▼bPurdue  University▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a92  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-04,  Section:  B.
■500    ▼aAdvisor:  Kim,  Sangtae.
■5021  ▼aThesis  (Ph.D.)--Purdue  University,  2024.
■520    ▼aIn  computer-aided  drug  discovery,  methods  that  are  approximate,  but  computationally  inexpensive  play  an  essential  role  during  the  initial  phase  of  the  discovery  process.  Although  often  inaccurate,  they  enable  the  screening  of  vast  drug  libraries  to  identify  potential  inhibitors  with  favorable  activities,  before  large  amounts  of  computational  resources  could  be  dedicated  to  studying  these  individual  molecules.  This  thesis  presents  such  an  approach,  based  on  the  concept  of  hydrogen  bond  wrapping,  to  study  protein-ligand  interactions  in  the  context  of  drug  discovery.  The  'wrapping'  refers  to  the  tendency  of  hydrophobic  groups  to  surround  a  hydrogen  bond  in  water,  leading  to  its  desolvation,  thereby  stabilizing  it.Herein,  a  molecular  descriptor  was  employed,  which  quantifies  the  extent  of  hydrophobic  wrapping  around  a  protein's  backbone  hydrogen  bonds  (BHBs)  and  could  help  speed  up  the  discovery  process  by  providing  cues  for  the  design  or  optimization  of  inhibitors.  Additionally,  these  insights  could  help  tailor  not  just  the  binding  affinity  of  inhibitors,  but  also  their  specificity  toward  an  intended  target  protein.  The  human  transmembrane  protease  serine  2  (TMPRSS2)  was  used  as  an  illustrative  target  protein  due  to  the  pressing  need  for  COVID-19  therapeutics,  and  since  the  current  understanding  of  the  binding  mechanisms  of  known  TMPRSS2  inhibitors  is  limited.Molecular  docking  with  a  Generalized  Born  -  surface  area  (GBSA)  scoring  function  was  first  performed  to  virtually  screen  for  TMPRSS2  inhibitors.  The  molecular  descriptor  was  then  used  to  analyze  the  change  in  wrapping  groups  of  TMPRSS2  BHBs  due  to  docked  ligands,  with  the  aim  of  identifying  BHBs  with  a  high  propensity  for  desolvation.  The  BHBs  involving  residues  Cys437,  Gln438,  Asp440,  and  Ser441  of  TMPRSS2  were  seen  to  have  some  of  the  largest  average  increases  in  wrapping.  These  general  results  were  also  compared  to  results  from  docking  of  the  known  TMPRSS2  inhibitors,  camostat,  and  nafamostat.The  data  generated  from  docking  were  then  used  to  examine  potential  applications  of  the  wrapping  molecular  descriptor  using  machine  learning  techniques:  (i)  for  prediction  of  the  solvent-accessible  surface  area  term  ΔGsa  of  the  GBSA  score  using  regression  and  (ii)  for  classifying  the  solvent  interactions  of  a  TMPRSS2-inhibitor  complex  as  favorable  or  unfavorable.  The  descriptor  was  seen  to  be  only  weakly  related  to  ΔGsa;  the  best-performing  regression  model  had  a  Pearson  correlation  coefficient  of  0.76  between  the  predictions  and  the  actual  values.  The  ability  of  the  descriptor  to  classify  solvent  interactions  was  more  satisfactory,  with  a  highest  value  for  area  under  the  receiver  operating  characteristic  curve  of  0.75.The  descriptor  was  then  used  to  analyze  the  effect  of  inhibitor  binding  on  the  dynamics  of  TMPRSS2  BHBs.  For  this,  molecular  dynamics  simulation  was  carried  out  for  the  uncomplexed  TMPRSS2,  as  well  as  its  complex  with  known  inhibitors  and  hit  molecules  from  docking.  The  binding  of  these  ligands  was  seen  to  improve  the  stability  of  TMPRSS2;  certain  BHBs  which  were  unstable  or  not  formed  in  the  uncomplexed  case,  showed  increased  stability.  These  prominently  included  a  couple  of  BHBs  identified  from  docking  as  having  gained  a  large  increase  in  wrapping.  The  improved  stability  coincided  with  an  increase  in  wrapping  groups  in  several  cases.  The  descriptor  also  successfully  rationalized  the  desolvation  of  a  few  BHBs  due  to  inhibitor  binding.
■590    ▼aSchool  code:  0183.
■650  4▼aCrystal  structure
■650  4▼aPhysics
■650  4▼aMiddle  East  respiratory  syndrome
■650  4▼aHydrogen  bonds
■650  4▼aSevere  acute  respiratory  syndrome  coronavirus  2
■650  4▼aProstate  cancer
■650  4▼aSolvents
■650  4▼aWater
■650  4▼aDrug  development
■650  4▼aEnergy
■650  4▼aViral  infections
■650  4▼aRespiratory  diseases
■650  4▼aCOVID-19
■650  4▼aOncology
■650  4▼aPharmaceutical  sciences
■650  4▼aVirology
■690    ▼a0791
■690    ▼a0605
■690    ▼a0800
■690    ▼a0992
■690    ▼a0572
■690    ▼a0720
■71020▼aPurdue  University.
■7730  ▼tDissertations  Abstracts  International▼g86-04B.
■790    ▼a0183
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17161528▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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