Experiment FindingsPDF Available

In vitro callus induction, phytochemical screening, and in silico docking of Vitex negundo secondary metabolites against HER2 protein, a breast cancer biomarker

Authors:
Book Chapter- Emerging Trends in Basic and Applied Sciences ISBN: 978-81-964972-3-1 Muthukrishnan Arun et.al.,
In vitro callus induction, phytochemical screening, and in
silico docking of Vitex negundo secondary metabolites
against HER2 protein, a breast cancer biomarker
Kumaresan Kowsalya1, Jaganathan Sakthi Yazhini Preetha1, Perakasam Lalitha
Jemima Aashmi2, Sivakumar Kowsalya 3, Muthukrishnan Arun1*
1Department of Biotechnology, Bharathiar University, Coimbatore-641046, Tamil Nadu, India
2Department of Integrative Biology, School of Biosciences and Technology, Vellore Institute of Technology,
Vellore - 632 014, Tamil Nadu, India
3PG and Research Department of Biotechnology, Nandha Arts and Science College, Erode-638052, Tamil
Nadu, India
*Corresponding Author Email ID: arun@buc.edu.in
Abstract
   
    !"   #   
"$ %
%  "%
  %% 
"&Vitex negundo'$(
")Verbenaceae.*
    % 
%  " )      "
*Vitex+",
       in silico ")     -
Vitex negundo.
         " / in silico    0%1 2%/%0%

 "3   in vitro    Vitex
negundo     4%0 5 67!  ) "8 67!  &$  " )  
     95"!     :29";<"= 
:5>"<";!"7%4<"816
!  8<"8 ?6  !     
9"! >8"-!"*
Vitexnegundo           %   
"
Keywords: Vitex negundo .
Introduction
Vitex negundo 7"            Verbenaceae. )  
)*        
    @ 5!" ) )     
Vitex negundoAsarvaroga nivaraniB$52!"")
    " 7       C+ 
"*Vitex negundo D.E
 %   )          " )    .
  $ F $ " *         
4G5$, 54!")%
  " ) 
  %5HD") .   
+")
"
)58I54=I52!"
Vitex negundo,  .  JK6$E         
     .=   
"Vitex negundo 
+.+
9
Book Chapter- Emerging Trends in Basic and Applied Sciences ISBN: 978-81-964972-3-1 Muthukrishnan Arun et.al.,
%DK$%
C"*C, 9!",Vitex
negundo  "8  "%  .  % +G
Let al., 55!"Vitex%Ehrlich
ascitesK"F&">!")
"D%
  in vitro" 0    
.")
       
,., 5-9;= 5-92=7.$5-95!"
/        !      
")
Vitex negundo 
M-!"
  .in
vitro +     Vitex negundo. * #  5!)  
        Vitex negundo  in silico  ! In vitro
+ Vitex negundo ;! *
+      Vitex negundo  CC
4! *          Vitex negundo 
!in vitro &$"
Materials and methods:
Molecular docking of selected Vitex secondary metabolites with HER2 target protein:
Collection of ligand and target protein:
*N OO0I)0N;OO/!
O0I."-Vitex negundo 
P 5OD" 7
7"O. O."
In vitro callus induction:
Plant sourcing and preparation of explants:
Vitex negundo P@ P@!"*
    0  I I @ D" ) 
  I$)$  D D"
 Vitex negundo 7" "* 
   *86!5") 
>   5%58      " * 
+    "5 6!    %;      
    " *  .     8%9 Q"9!" R 
   &$  ";  ">    
4%0"8%6!)"8%6!4%056!"*
  #  8"2%8"9     55HD 58  $
58= 54!"
Culture condition:
* 8<HD ; 59
2."*58&$"
Analysis of biomass:
;"*
,3!"*8HD8
03!"
Sample extraction procedure:
5 C ")5
.   . 58  ; "*     
 %"  ;       ;   5 " *
-
Book Chapter- Emerging Trends in Basic and Applied Sciences ISBN: 978-81-964972-3-1 Muthukrishnan Arun et.al.,
 .       " /
  4HD" ,
56O.5-!"
Phytochemical screening:
Qualitative phytochemical screening:
,CK"54 O.
5- .      .
"
Quantitative phytochemical screening of phenols:
*,%D$"*
  !58S ,%D  
 . "  2  5"8   >         " 
     8S6 8S6>8S6 
5S6!"*-"*
 .>28@L6L $"*
1C!6## 5!"
Quantitative phytochemical screening of flavonoid:
*C"5"8
  -8     "8    C!  " *  "5   5 
"*"55&"9
"* . "* 
.458@L6L"
   " *    ?
CC!6K58!"
Antioxidant assays:
Determination of antioxidant activity using the DPPH radical scavenging method:
*     " I"5  
%56!."48S
*D5"5&0OO"5&67!"*;
  .           85>  
$+@L%52-Q!"*"7
     " *       
T%!6U56
## 5!"
Determination of antioxidant activity using the ferric reducing/antioxidant method (FRAP):
* , O          I+  $ 5--2!  
" * .   ; &   ;"5 D;K/" ;/  52 
D4/! ;"25&*O*M 4& D &,D;"2/"* 
"*., O!8
8*O*M8,D;"2/5N5N5!"*;S
">, O"8
8-;"*.%
, O!"
Statistical analysis:
*   +      $O$$ 55"- )I& D!"
0<"*0E
0& *!8"
Results:
Molecular docking of selected Vitex secondary metabolites with HER2 target protein:
& .       
") 
Vitex negundo *%5!.)in silico 
0%12%/V0 
"*      N *-41;- 1>)5-- 
*5>") 0%12%/%%0% 
5
Book Chapter- Emerging Trends in Basic and Applied Sciences ISBN: 978-81-964972-3-1 Muthukrishnan Arun et.al.,
     ")     in silico
   0%1 2%/%%0%%     
 "50%12%/%0%%
 "
In vitro callus induction:
%&$"8%"64%0
 ) "8%6!" 1     
,";!"*"
&$4%05"6!)"8
6!95"! 29";<"!
5>"<";!,"48!"
Qualitative phytochemical screening:
O             
.*!"
*      .       " *  
             " *
."*
  " *    "*   
  "* 
"*"K
"
Quantitative phytochemical screening of phenols and flavonoids:
)  4< "816 !
8 <"8 ?6  !       : ;9"9 <
"16!:"8<";?6!,"2!"
Determination of antioxidant activity by DPPH radical scavenging method and ferric
reducing/antioxidant method (FRAP):
)0OO       9"! 
>2"!  98"9!" ,      
0OO   % " *       
   , O " *   % *O*M%,W   
+*O*M%,;W8-;")
, O>8"-!
2>"9!-";!,">!"
Discussion:
&.+
*5= &.#5!"*.
   ")
    in vitro "
   Vitex negundo  
%%
 %   0 ;!"   Vitex %  
. "*
Vitex negundo  ."*
 +"*
*-41;-1>5--*5>")0+
 " &    Vitex negundo     
     " )       in silico  0%
1 2%/%%0%%         "
*. %
M-!"
*  C       
     
,#+, 5;!"* .
55
Book Chapter- Emerging Trends in Basic and Applied Sciences ISBN: 978-81-964972-3-1 Muthukrishnan Arun et.al.,
     ""  !   
+FP5--!")
 C              
$et al., 5--!
,, 5--!" *           
" * !
    V. negundo   

D, 55= !"D"D
;"*
               "  
       " *       
9")564%0"86)
   " )    
4%04%0)
" *              Vitex
negundo"
/CC
    C     "*  
%
"%
   "      
  . %  5=
0 52= $ 55!" *    Vitex negundo   #  C
C" )    C    
        . 
         * !" ) C   
4<"86!8<"86!
:;9"9<"6!=:"8<";6!"
)0OO9"!
>2"!98"9!") 
, O " )  , O >8"-!
 2>"9!-";! ,"2!"*! 
  ,>"*
Vitex negund=
-";!XVitex negundo >8"-!2>"9!5S6"
*")
  Y%      
++,#+
5;= 2=R59!"
Conclusion:
In silico   Vitex
negundo"*0%12%/%0%% 
"" )
 .")
               
"* 4%0 567!)"867!" ) 
95"! :29";<"=:
5>" <";!" 3            
 4 < "8  16  !  8 < "8  ?6  !   
  9"!     >8"-!" *
in vitroin vivo%
Vitex-" , +
Vitex negundo            
"
Acknowledgments
5
Book Chapter- Emerging Trends in Basic and Applied Sciences ISBN: 978-81-964972-3-1 Muthukrishnan Arun et.al.,
*.ID* DID* D!I
@#I@6 @$"6ID* D66ID* D%D*9654"5"!"
References
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"ZOriental Journal of ChemistryZ28!--;"
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"ZTanzania Journal of Health ResearchZ145!"
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Journal of Pharmaceutical InnovationZ18!-%"
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Figures and tables:
Fig.1. Molecular docking and ligand interaction of D-Glucose, 6-O-D-galactopyranosyl compound with HER2
protein
54
Book Chapter- Emerging Trends in Basic and Applied Sciences ISBN: 978-81-964972-3-1 Muthukrishnan Arun et.al.,
Fig.2: Callus induction and proliferation: ! Vitex negundo     I
@=I!792!=D!D8=0!O
5=!O=,!O
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"867!"$58"
58
Book Chapter- Emerging Trends in Basic and Applied Sciences ISBN: 978-81-964972-3-1 Muthukrishnan Arun et.al.,
Fig.3: Callus induction from leaf explants of Vitex negundo: !4%0"8G67!=I!
)"8G"67!    4%0 567!" O  :"
6"! 5"*; " Bars 
   :5!   " & 
0E8"
52
Book Chapter- Emerging Trends in Basic and Applied Sciences ISBN: 978-81-964972-3-1 Muthukrishnan Arun et.al.,
Fig.4: Effect of 2,4-D (0.5– 2.0mg/L) on biomass of callus induced from leaf explants of Vitex negundo: !
,6=I!06"* ;" Bars 
     :5!   " &  
0E8"
5>
Book Chapter- Emerging Trends in Basic and Applied Sciences ISBN: 978-81-964972-3-1 Muthukrishnan Arun et.al.,
Fig.5: Effect of IAA (0.5 2.0 mg/L) in combination with 2,4-D best concentration (1mg/l) on callus
biomass induced from leaf explants of Vitex negundoN! , 6=I!06"*
; "Bars 
:5! "& 
0E8"
59
Book Chapter- Emerging Trends in Basic and Applied Sciences ISBN: 978-81-964972-3-1 Muthukrishnan Arun et.al.,
Fig.6: Comparative assessment of phytochemical assays in leaf-derived callus culture of Vitex negundo
!*=I!* "I
  :8!  " &   
0E8"
5-
Book Chapter- Emerging Trends in Basic and Applied Sciences ISBN: 978-81-964972-3-1 Muthukrishnan Arun et.al.,
Fig.7: Comparative assessment of Antioxidant assays in leaf derived callus culture of Vitex negundo
DN& V.negundo   $N D
N&&$ 4%056
) "8 6" I         :8!   "
&0E
8"
Table-1: List of Vitex negundo phytocompounds achieving best binding energy with the selected target
HER2 protein
Compound name Compound ID Docking score
0% 2%/%0%
%
445;495; %5;">
0% 59-8 %-"8
I+;% >4 %8"289
5%%5;%%8-5;%
 %49 

8;2>25 %8"84
4%%4% ;% %;8% 55-9;9 %8";

Book Chapter- Emerging Trends in Basic and Applied Sciences ISBN: 978-81-964972-3-1 Muthukrishnan Arun et.al.,
%2%%
%5 89>8- %4"-48
%%4%22%
%5%! %%
%5%
8;2-49 %4">>
 -95 %4"42
 895858 %4"4;
;%55 544-> %4";
4%%5%;%%M 8;24>4 %4";5
+ 54%%>%5%
!%
;858 %;"->5
 ;528 %;">-
O 894;8 %;"8;4
O55;%% 424 %;"8;4
55;% 

9-2 %"55;
%-%!%M!% 8;24>5; %5"-;>
% 248-2 %5"94
I55%%;% 5-2-8 %5">>2
2-558%0 

8;22> %5">;
%-5%
!%MM!%
8;282>8 %5"48
4%0 84-54 %"-5>
4-%0  %%

8422825 %"2-
 5;22 "-
Table 2: Qualitative phytochemical analysis of V. negundo methanolic extract
'W(
'%(
5
Phytochemical tests Callus extract Leaves extract
O + +
, + +
. + +
* + +
* + +
1 + +
$ + +
O - -
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