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Design Map1
Methods2
© 2007 - 2018 Creative-Biolabs All Rights Reserved Email: info@creative-biolabs.com Tel: 1-631-381-2994
Grafting
Chain
Shuffling
ANTIBODY HUMANIZATION
Creative Biolabs
Antibody
Humanization
Services
Multiple humanization degrees
Integrated antibody affinity maturation
Proprietary approach to evaluate the
immunogenicity
Humanization to antibodies of other species
Sequence and structure analysis
Construction, expression, identification
and biopanning of humanized antibodies
Multiple-degree humanization
Affinity and immunogenicity verification
FEATURES:WHAT WE DO:
VL
gene
The design of grafted or resur-
faced antibodies often involves
an iterated approach where
sequence designs are generat-
ed and tested in binding and/or
functional assays. Repeated
analysis, construction and test
procedures are required to
achieve better humanization.
In CDR-, FR-, and SDR-grafting
methods, all or part of the
variable or framework regions
of both murine and human
antibody genes are amplified
to generate the recombinant
plasmids, which are finally
applied to produce humanized
antibodies in bacterial or mam-
malian systems.
Except for chain shuffling
method generating fully
humanized antibodies, grafting
methods can generate antibod-
ies of different humanization
degrees. The single or
combined replacements of
complementarity determining
regions, framework regions and
specificity determining residues
respectively of a rodent
antibody by the corresponding
regions of human antibody can
respectively generate the
CDR-grafted, CDR & FR grafted,
and SDR-grafted humanized
antibodies.
murine
human
VH
gene
CL
gene
CH
gene
chimeric
L gene
chimeric
H gene
L chain of murine
Ab against a
certain antigen
human H chain
phage library
G3P
H chain
human L chain
phage library
L chain
G3P
human H chain
with highest-affinity
to the antigen
panned human
H/L chains pair
with highest-affinity
to the antigen
fully
humanized
partially
humanized
Humanization Degrees3
murine
Analysis of
Donor Sequences
Construction of
Fv 3D Model
Choice of
Acceptor
Sequences
Identification of
Backmutations
Design of
Humanized
Sequences
Construction
of Humanized
Sequences
Test of
Humanized
Sequences
humanized human
No ?
Yes ?
SDRs
CDR1
CDR2
CDR3
FR1
FR2
FR3
FR4
Human CDR
residues
Human
FR1
Human
FR2
Human
FR3
Human
FR4
Murine Ab CDR-grafted
Humanized Ab
CDR & FR-
grafted
Humanized Ab
“Abbreviated”
CDR-grafted
Humanized Ab
SDR-grafted
Humanized Ab
Murine constant regions
Murine framework regions
Non-SDRs of murine CDRs
SDRs of murine CDRs
Human framework regions
Human CDR residues
In chain shuffling method,
the light chain of the rodent
antibody is replaced by light
chains in human antibody
libraries; the resulting hybrid
antibody library is screened by
panning against the certain
antigen. The heavy chain of the
selected hybrid antibody is
replaced by heavy chains of
human antibody library. Subse-
quent screening of this second-
ary chimeric library will produce
fully humanized antibodies.
in vivo

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Antibody humanization

  • 1. Design Map1 Methods2 © 2007 - 2018 Creative-Biolabs All Rights Reserved Email: info@creative-biolabs.com Tel: 1-631-381-2994 Grafting Chain Shuffling ANTIBODY HUMANIZATION Creative Biolabs Antibody Humanization Services Multiple humanization degrees Integrated antibody affinity maturation Proprietary approach to evaluate the immunogenicity Humanization to antibodies of other species Sequence and structure analysis Construction, expression, identification and biopanning of humanized antibodies Multiple-degree humanization Affinity and immunogenicity verification FEATURES:WHAT WE DO: VL gene The design of grafted or resur- faced antibodies often involves an iterated approach where sequence designs are generat- ed and tested in binding and/or functional assays. Repeated analysis, construction and test procedures are required to achieve better humanization. In CDR-, FR-, and SDR-grafting methods, all or part of the variable or framework regions of both murine and human antibody genes are amplified to generate the recombinant plasmids, which are finally applied to produce humanized antibodies in bacterial or mam- malian systems. Except for chain shuffling method generating fully humanized antibodies, grafting methods can generate antibod- ies of different humanization degrees. The single or combined replacements of complementarity determining regions, framework regions and specificity determining residues respectively of a rodent antibody by the corresponding regions of human antibody can respectively generate the CDR-grafted, CDR & FR grafted, and SDR-grafted humanized antibodies. murine human VH gene CL gene CH gene chimeric L gene chimeric H gene L chain of murine Ab against a certain antigen human H chain phage library G3P H chain human L chain phage library L chain G3P human H chain with highest-affinity to the antigen panned human H/L chains pair with highest-affinity to the antigen fully humanized partially humanized Humanization Degrees3 murine Analysis of Donor Sequences Construction of Fv 3D Model Choice of Acceptor Sequences Identification of Backmutations Design of Humanized Sequences Construction of Humanized Sequences Test of Humanized Sequences humanized human No ? Yes ? SDRs CDR1 CDR2 CDR3 FR1 FR2 FR3 FR4 Human CDR residues Human FR1 Human FR2 Human FR3 Human FR4 Murine Ab CDR-grafted Humanized Ab CDR & FR- grafted Humanized Ab “Abbreviated” CDR-grafted Humanized Ab SDR-grafted Humanized Ab Murine constant regions Murine framework regions Non-SDRs of murine CDRs SDRs of murine CDRs Human framework regions Human CDR residues In chain shuffling method, the light chain of the rodent antibody is replaced by light chains in human antibody libraries; the resulting hybrid antibody library is screened by panning against the certain antigen. The heavy chain of the selected hybrid antibody is replaced by heavy chains of human antibody library. Subse- quent screening of this second- ary chimeric library will produce fully humanized antibodies. in vivo