Molecular determinants for brain targeting by peptides: a meta-analysis approach with experimental validation

Blood–brain barrier (BBB) peptide-shuttles (BBBpS) are able to translocate the BBB and reach the brain. Despite the importance of brain targeting in pharmacology, BBBpS are poorly characterized. Currently, their development relies on the empiric assumption that cell-penetrating peptides (CPPs), with...
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Autor*in:	Cavaco, Marco [verfasserIn] Fraga, Patrícia [verfasserIn] Valle, Javier [verfasserIn] Silva, Ruben D. M. [verfasserIn] Gano, Lurdes [verfasserIn] Correia, João D. G. [verfasserIn] Andreu, David [verfasserIn] Castanho, Miguel A. R. B. [verfasserIn] Neves, Vera [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2024

Schlagwörter:	Blood–brain barrier (BBB) Blood–brain barrier peptide shuttles (BBBpS) Brain delivery Cell-penetrating peptides (CPPs) Neurological disorders

Anmerkung:	© The Author(s) 2024

Übergeordnetes Werk:	Enthalten in: Fluids and barriers of the CNS - BioMed Central, 2011, 21(2024), 1 vom: 27. Mai
Übergeordnetes Werk:	volume:21 ; year:2024 ; number:1 ; day:27 ; month:05

Links:	Volltext

DOI / URN:	10.1186/s12987-024-00545-5

Katalog-ID:	SPR055999956

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allfields	10.1186/s12987-024-00545-5 doi (DE-627)SPR055999956 (SPR)s12987-024-00545-5-e DE-627 ger DE-627 rakwb eng 610 VZ Cavaco, Marco verfasserin aut Molecular determinants for brain targeting by peptides: a meta-analysis approach with experimental validation 2024 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2024 Blood–brain barrier (BBB) peptide-shuttles (BBBpS) are able to translocate the BBB and reach the brain. Despite the importance of brain targeting in pharmacology, BBBpS are poorly characterized. Currently, their development relies on the empiric assumption that cell-penetrating peptides (CPPs), with proven ability to traverse lipid membranes, will likewise behave as a BBBpS. The relationship between CPPs/BBBpS remains elusive and, to the best of our knowledge, has not hitherto been subject to thorough experimental scrutiny. In this work, we have identified/quantified the main physicochemical properties of BBBpS and then searched for CPPs with these properties, hence potential BBBpS. The specific features found for BBBpS are: (i) small size, (ii) none or few aromatic residues, (iii) hydrophobic, and (iv) slight cationic nature. Then, we selected the 10 scoring best in an ordinary least squares analysis, and tested them in vitro and in vivo. Overall, we identified the molecular determinants for brain targeting by peptides, devised a methodology that can be used to assist in the design of peptides with potential brain penetration from amino acid residue sequences, and found four new BBBpS within the CPP library. Graphical Abstract Blood–brain barrier (BBB) (dpeaa)DE-He213 Blood–brain barrier peptide shuttles (BBBpS) (dpeaa)DE-He213 Brain delivery (dpeaa)DE-He213 Cell-penetrating peptides (CPPs) (dpeaa)DE-He213 Neurological disorders (dpeaa)DE-He213 Fraga, Patrícia verfasserin aut Valle, Javier verfasserin aut Silva, Ruben D. M. verfasserin aut Gano, Lurdes verfasserin aut Correia, João D. G. verfasserin aut Andreu, David verfasserin aut Castanho, Miguel A. R. B. verfasserin aut Neves, Vera verfasserin aut Enthalten in Fluids and barriers of the CNS BioMed Central, 2011 21(2024), 1 vom: 27. Mai Online-Ressource (DE-627)647306441 (DE-600)2595406-4 (DE-576)337894132 2045-8118 nnns volume:21 year:2024 number:1 day:27 month:05 https://dx.doi.org/10.1186/s12987-024-00545-5 X:SPRINGER Resolving-System kostenfrei Volltext SYSFLAG_0 GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 21 2024 1 27 05
spelling	10.1186/s12987-024-00545-5 doi (DE-627)SPR055999956 (SPR)s12987-024-00545-5-e DE-627 ger DE-627 rakwb eng 610 VZ Cavaco, Marco verfasserin aut Molecular determinants for brain targeting by peptides: a meta-analysis approach with experimental validation 2024 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2024 Blood–brain barrier (BBB) peptide-shuttles (BBBpS) are able to translocate the BBB and reach the brain. Despite the importance of brain targeting in pharmacology, BBBpS are poorly characterized. Currently, their development relies on the empiric assumption that cell-penetrating peptides (CPPs), with proven ability to traverse lipid membranes, will likewise behave as a BBBpS. The relationship between CPPs/BBBpS remains elusive and, to the best of our knowledge, has not hitherto been subject to thorough experimental scrutiny. In this work, we have identified/quantified the main physicochemical properties of BBBpS and then searched for CPPs with these properties, hence potential BBBpS. The specific features found for BBBpS are: (i) small size, (ii) none or few aromatic residues, (iii) hydrophobic, and (iv) slight cationic nature. Then, we selected the 10 scoring best in an ordinary least squares analysis, and tested them in vitro and in vivo. Overall, we identified the molecular determinants for brain targeting by peptides, devised a methodology that can be used to assist in the design of peptides with potential brain penetration from amino acid residue sequences, and found four new BBBpS within the CPP library. Graphical Abstract Blood–brain barrier (BBB) (dpeaa)DE-He213 Blood–brain barrier peptide shuttles (BBBpS) (dpeaa)DE-He213 Brain delivery (dpeaa)DE-He213 Cell-penetrating peptides (CPPs) (dpeaa)DE-He213 Neurological disorders (dpeaa)DE-He213 Fraga, Patrícia verfasserin aut Valle, Javier verfasserin aut Silva, Ruben D. M. verfasserin aut Gano, Lurdes verfasserin aut Correia, João D. G. verfasserin aut Andreu, David verfasserin aut Castanho, Miguel A. R. B. verfasserin aut Neves, Vera verfasserin aut Enthalten in Fluids and barriers of the CNS BioMed Central, 2011 21(2024), 1 vom: 27. Mai Online-Ressource (DE-627)647306441 (DE-600)2595406-4 (DE-576)337894132 2045-8118 nnns volume:21 year:2024 number:1 day:27 month:05 https://dx.doi.org/10.1186/s12987-024-00545-5 X:SPRINGER Resolving-System kostenfrei Volltext SYSFLAG_0 GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 21 2024 1 27 05
allfields_unstemmed	10.1186/s12987-024-00545-5 doi (DE-627)SPR055999956 (SPR)s12987-024-00545-5-e DE-627 ger DE-627 rakwb eng 610 VZ Cavaco, Marco verfasserin aut Molecular determinants for brain targeting by peptides: a meta-analysis approach with experimental validation 2024 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2024 Blood–brain barrier (BBB) peptide-shuttles (BBBpS) are able to translocate the BBB and reach the brain. Despite the importance of brain targeting in pharmacology, BBBpS are poorly characterized. Currently, their development relies on the empiric assumption that cell-penetrating peptides (CPPs), with proven ability to traverse lipid membranes, will likewise behave as a BBBpS. The relationship between CPPs/BBBpS remains elusive and, to the best of our knowledge, has not hitherto been subject to thorough experimental scrutiny. In this work, we have identified/quantified the main physicochemical properties of BBBpS and then searched for CPPs with these properties, hence potential BBBpS. The specific features found for BBBpS are: (i) small size, (ii) none or few aromatic residues, (iii) hydrophobic, and (iv) slight cationic nature. Then, we selected the 10 scoring best in an ordinary least squares analysis, and tested them in vitro and in vivo. Overall, we identified the molecular determinants for brain targeting by peptides, devised a methodology that can be used to assist in the design of peptides with potential brain penetration from amino acid residue sequences, and found four new BBBpS within the CPP library. Graphical Abstract Blood–brain barrier (BBB) (dpeaa)DE-He213 Blood–brain barrier peptide shuttles (BBBpS) (dpeaa)DE-He213 Brain delivery (dpeaa)DE-He213 Cell-penetrating peptides (CPPs) (dpeaa)DE-He213 Neurological disorders (dpeaa)DE-He213 Fraga, Patrícia verfasserin aut Valle, Javier verfasserin aut Silva, Ruben D. M. verfasserin aut Gano, Lurdes verfasserin aut Correia, João D. G. verfasserin aut Andreu, David verfasserin aut Castanho, Miguel A. R. B. verfasserin aut Neves, Vera verfasserin aut Enthalten in Fluids and barriers of the CNS BioMed Central, 2011 21(2024), 1 vom: 27. Mai Online-Ressource (DE-627)647306441 (DE-600)2595406-4 (DE-576)337894132 2045-8118 nnns volume:21 year:2024 number:1 day:27 month:05 https://dx.doi.org/10.1186/s12987-024-00545-5 X:SPRINGER Resolving-System kostenfrei Volltext SYSFLAG_0 GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 21 2024 1 27 05
allfieldsGer	10.1186/s12987-024-00545-5 doi (DE-627)SPR055999956 (SPR)s12987-024-00545-5-e DE-627 ger DE-627 rakwb eng 610 VZ Cavaco, Marco verfasserin aut Molecular determinants for brain targeting by peptides: a meta-analysis approach with experimental validation 2024 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2024 Blood–brain barrier (BBB) peptide-shuttles (BBBpS) are able to translocate the BBB and reach the brain. Despite the importance of brain targeting in pharmacology, BBBpS are poorly characterized. Currently, their development relies on the empiric assumption that cell-penetrating peptides (CPPs), with proven ability to traverse lipid membranes, will likewise behave as a BBBpS. The relationship between CPPs/BBBpS remains elusive and, to the best of our knowledge, has not hitherto been subject to thorough experimental scrutiny. In this work, we have identified/quantified the main physicochemical properties of BBBpS and then searched for CPPs with these properties, hence potential BBBpS. The specific features found for BBBpS are: (i) small size, (ii) none or few aromatic residues, (iii) hydrophobic, and (iv) slight cationic nature. Then, we selected the 10 scoring best in an ordinary least squares analysis, and tested them in vitro and in vivo. Overall, we identified the molecular determinants for brain targeting by peptides, devised a methodology that can be used to assist in the design of peptides with potential brain penetration from amino acid residue sequences, and found four new BBBpS within the CPP library. Graphical Abstract Blood–brain barrier (BBB) (dpeaa)DE-He213 Blood–brain barrier peptide shuttles (BBBpS) (dpeaa)DE-He213 Brain delivery (dpeaa)DE-He213 Cell-penetrating peptides (CPPs) (dpeaa)DE-He213 Neurological disorders (dpeaa)DE-He213 Fraga, Patrícia verfasserin aut Valle, Javier verfasserin aut Silva, Ruben D. M. verfasserin aut Gano, Lurdes verfasserin aut Correia, João D. G. verfasserin aut Andreu, David verfasserin aut Castanho, Miguel A. R. B. verfasserin aut Neves, Vera verfasserin aut Enthalten in Fluids and barriers of the CNS BioMed Central, 2011 21(2024), 1 vom: 27. Mai Online-Ressource (DE-627)647306441 (DE-600)2595406-4 (DE-576)337894132 2045-8118 nnns volume:21 year:2024 number:1 day:27 month:05 https://dx.doi.org/10.1186/s12987-024-00545-5 X:SPRINGER Resolving-System kostenfrei Volltext SYSFLAG_0 GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 21 2024 1 27 05
allfieldsSound	10.1186/s12987-024-00545-5 doi (DE-627)SPR055999956 (SPR)s12987-024-00545-5-e DE-627 ger DE-627 rakwb eng 610 VZ Cavaco, Marco verfasserin aut Molecular determinants for brain targeting by peptides: a meta-analysis approach with experimental validation 2024 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2024 Blood–brain barrier (BBB) peptide-shuttles (BBBpS) are able to translocate the BBB and reach the brain. Despite the importance of brain targeting in pharmacology, BBBpS are poorly characterized. Currently, their development relies on the empiric assumption that cell-penetrating peptides (CPPs), with proven ability to traverse lipid membranes, will likewise behave as a BBBpS. The relationship between CPPs/BBBpS remains elusive and, to the best of our knowledge, has not hitherto been subject to thorough experimental scrutiny. In this work, we have identified/quantified the main physicochemical properties of BBBpS and then searched for CPPs with these properties, hence potential BBBpS. The specific features found for BBBpS are: (i) small size, (ii) none or few aromatic residues, (iii) hydrophobic, and (iv) slight cationic nature. Then, we selected the 10 scoring best in an ordinary least squares analysis, and tested them in vitro and in vivo. Overall, we identified the molecular determinants for brain targeting by peptides, devised a methodology that can be used to assist in the design of peptides with potential brain penetration from amino acid residue sequences, and found four new BBBpS within the CPP library. Graphical Abstract Blood–brain barrier (BBB) (dpeaa)DE-He213 Blood–brain barrier peptide shuttles (BBBpS) (dpeaa)DE-He213 Brain delivery (dpeaa)DE-He213 Cell-penetrating peptides (CPPs) (dpeaa)DE-He213 Neurological disorders (dpeaa)DE-He213 Fraga, Patrícia verfasserin aut Valle, Javier verfasserin aut Silva, Ruben D. M. verfasserin aut Gano, Lurdes verfasserin aut Correia, João D. G. verfasserin aut Andreu, David verfasserin aut Castanho, Miguel A. R. B. verfasserin aut Neves, Vera verfasserin aut Enthalten in Fluids and barriers of the CNS BioMed Central, 2011 21(2024), 1 vom: 27. Mai Online-Ressource (DE-627)647306441 (DE-600)2595406-4 (DE-576)337894132 2045-8118 nnns volume:21 year:2024 number:1 day:27 month:05 https://dx.doi.org/10.1186/s12987-024-00545-5 X:SPRINGER Resolving-System kostenfrei Volltext SYSFLAG_0 GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 21 2024 1 27 05
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author	Cavaco, Marco
spellingShingle	Cavaco, Marco ddc 610 misc Blood–brain barrier (BBB) misc Blood–brain barrier peptide shuttles (BBBpS) misc Brain delivery misc Cell-penetrating peptides (CPPs) misc Neurological disorders Molecular determinants for brain targeting by peptides: a meta-analysis approach with experimental validation
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topic_title	610 VZ Molecular determinants for brain targeting by peptides: a meta-analysis approach with experimental validation Blood–brain barrier (BBB) (dpeaa)DE-He213 Blood–brain barrier peptide shuttles (BBBpS) (dpeaa)DE-He213 Brain delivery (dpeaa)DE-He213 Cell-penetrating peptides (CPPs) (dpeaa)DE-He213 Neurological disorders (dpeaa)DE-He213
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author_browse	Cavaco, Marco Fraga, Patrícia Valle, Javier Silva, Ruben D. M. Gano, Lurdes Correia, João D. G. Andreu, David Castanho, Miguel A. R. B. Neves, Vera
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title_sort	molecular determinants for brain targeting by peptides: a meta-analysis approach with experimental validation
title_auth	Molecular determinants for brain targeting by peptides: a meta-analysis approach with experimental validation
abstract	Blood–brain barrier (BBB) peptide-shuttles (BBBpS) are able to translocate the BBB and reach the brain. Despite the importance of brain targeting in pharmacology, BBBpS are poorly characterized. Currently, their development relies on the empiric assumption that cell-penetrating peptides (CPPs), with proven ability to traverse lipid membranes, will likewise behave as a BBBpS. The relationship between CPPs/BBBpS remains elusive and, to the best of our knowledge, has not hitherto been subject to thorough experimental scrutiny. In this work, we have identified/quantified the main physicochemical properties of BBBpS and then searched for CPPs with these properties, hence potential BBBpS. The specific features found for BBBpS are: (i) small size, (ii) none or few aromatic residues, (iii) hydrophobic, and (iv) slight cationic nature. Then, we selected the 10 scoring best in an ordinary least squares analysis, and tested them in vitro and in vivo. Overall, we identified the molecular determinants for brain targeting by peptides, devised a methodology that can be used to assist in the design of peptides with potential brain penetration from amino acid residue sequences, and found four new BBBpS within the CPP library. Graphical Abstract © The Author(s) 2024
abstractGer	Blood–brain barrier (BBB) peptide-shuttles (BBBpS) are able to translocate the BBB and reach the brain. Despite the importance of brain targeting in pharmacology, BBBpS are poorly characterized. Currently, their development relies on the empiric assumption that cell-penetrating peptides (CPPs), with proven ability to traverse lipid membranes, will likewise behave as a BBBpS. The relationship between CPPs/BBBpS remains elusive and, to the best of our knowledge, has not hitherto been subject to thorough experimental scrutiny. In this work, we have identified/quantified the main physicochemical properties of BBBpS and then searched for CPPs with these properties, hence potential BBBpS. The specific features found for BBBpS are: (i) small size, (ii) none or few aromatic residues, (iii) hydrophobic, and (iv) slight cationic nature. Then, we selected the 10 scoring best in an ordinary least squares analysis, and tested them in vitro and in vivo. Overall, we identified the molecular determinants for brain targeting by peptides, devised a methodology that can be used to assist in the design of peptides with potential brain penetration from amino acid residue sequences, and found four new BBBpS within the CPP library. Graphical Abstract © The Author(s) 2024
abstract_unstemmed	Blood–brain barrier (BBB) peptide-shuttles (BBBpS) are able to translocate the BBB and reach the brain. Despite the importance of brain targeting in pharmacology, BBBpS are poorly characterized. Currently, their development relies on the empiric assumption that cell-penetrating peptides (CPPs), with proven ability to traverse lipid membranes, will likewise behave as a BBBpS. The relationship between CPPs/BBBpS remains elusive and, to the best of our knowledge, has not hitherto been subject to thorough experimental scrutiny. In this work, we have identified/quantified the main physicochemical properties of BBBpS and then searched for CPPs with these properties, hence potential BBBpS. The specific features found for BBBpS are: (i) small size, (ii) none or few aromatic residues, (iii) hydrophobic, and (iv) slight cationic nature. Then, we selected the 10 scoring best in an ordinary least squares analysis, and tested them in vitro and in vivo. Overall, we identified the molecular determinants for brain targeting by peptides, devised a methodology that can be used to assist in the design of peptides with potential brain penetration from amino acid residue sequences, and found four new BBBpS within the CPP library. Graphical Abstract © The Author(s) 2024
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title_short	Molecular determinants for brain targeting by peptides: a meta-analysis approach with experimental validation
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Despite the importance of brain targeting in pharmacology, BBBpS are poorly characterized. Currently, their development relies on the empiric assumption that cell-penetrating peptides (CPPs), with proven ability to traverse lipid membranes, will likewise behave as a BBBpS. The relationship between CPPs/BBBpS remains elusive and, to the best of our knowledge, has not hitherto been subject to thorough experimental scrutiny. In this work, we have identified/quantified the main physicochemical properties of BBBpS and then searched for CPPs with these properties, hence potential BBBpS. The specific features found for BBBpS are: (i) small size, (ii) none or few aromatic residues, (iii) hydrophobic, and (iv) slight cationic nature. Then, we selected the 10 scoring best in an ordinary least squares analysis, and tested them in vitro and in vivo. Overall, we identified the molecular determinants for brain targeting by peptides, devised a methodology that can be used to assist in the design of peptides with potential brain penetration from amino acid residue sequences, and found four new BBBpS within the CPP library. Graphical Abstract</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Blood–brain barrier (BBB)</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Blood–brain barrier peptide shuttles (BBBpS)</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Brain delivery</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Cell-penetrating peptides (CPPs)</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Neurological disorders</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Fraga, Patrícia</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Valle, Javier</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Silva, Ruben D. 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Molecular determinants for brain targeting by peptides: a meta-analysis approach with experimental validation

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