Protease Cleavable Linker
Protease-cleavable linkers connect targeting units to payloads and enable conditional drug release after protease processing in ADCs and related drug conjugates[1]. Mechanistically, Val-Cit and related peptide linkers support lysosomal cathepsin-mediated payload release, while plasma stability remains a central design requirement[1][2]. In tumor models, cleavable Val-Cit or Val-Ala systems released MMAE after intracellular or extracellular proteolysis and produced antitumor activity, whereas noncleavable designs reduced activity in comparable settings[3][4]. Compared with Val-Cit, Val-Ala, glutamic acid-Val-Cit, EGCit, and exo-cleavable designs addressed isoform-like sequence differences in linker susceptibility, including mouse carboxylesterase, neutrophil elastase, aggregation, and premature release[2][5][6][7]. For research applications, these linkers guide ADC, albumin-drug conjugate, and immune-stimulating antibody conjugate design by balancing protease access, tumor payload release, plasma stability, and species-relevant preclinical evaluation[6][8][9].
References:
- [1]. Sutherland MS, et al. Lysosomal trafficking and cysteine protease metabolism confer target-specific cytotoxicity by peptide-linked anti-CD30-auristatin conjugates. J Biol Chem. 2006 Apr 14;281(15):10540-7. [Content Brief]
- [2]. Balamkundu S, et al. Lysosomal-Cleavable Peptide Linkers in Antibody-Drug Conjugates. Biomedicines. 2023 Nov 16;11(11):3080. [Content Brief]
- [3]. Dal Corso A, et al. Protease-Cleavable Linkers Modulate the Anticancer Activity of Noninternalizing Antibody-Drug Conjugates. Bioconjug Chem. 2017 Jul 19;28(7):1826-1833. [Content Brief]
- [4]. Gébleux R, et al. Non-internalizing antibody-drug conjugates display potent anti-cancer activity upon proteolytic release of monomethyl auristatin E in the subendothelial extracellular matrix. Int J Cancer. 2017 Apr 1;140(7):1670-1679. [Content Brief]
- [5]. Anami Y, et al. Glutamic acid-valine-citrulline linkers ensure stability and efficacy of antibody-drug conjugates in mice. Nat Commun. 2018 Jun 28;9(1):2512. [Content Brief]
- [6]. Ha SYY, et al. An Enzymatically Cleavable Tripeptide Linker for Maximizing the Therapeutic Index of Antibody-Drug Conjugates. Mol Cancer Ther. 2022 Sep 6;21(9):1449-1461. [Content Brief]
- [7]. Watanabe T, et al. Exo-Cleavable Linkers: Enhanced Stability and Therapeutic Efficacy in Antibody-Drug Conjugates. J Med Chem. 2024 Oct 24;67(20):18124-18138. [Content Brief]
- [8]. Bernardim B, et al. Cathepsin B Processing Is Required for the In Vivo Efficacy of Albumin-Drug Conjugates. Bioconjug Chem. 2024 Feb 21;35(2):132-139. [Content Brief]
- [9]. Bisbal Lopez L, et al. Ex vivo mass spectrometry-based biodistribution analysis of an antibody-Resiquimod conjugate bearing a protease-cleavable and acid-labile linker. Front Pharmacol. 2023 Dec 6;14:1320524. [Content Brief]
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Protease Cleavable Linker Related Products (83)
Related Products (83)
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Mc-Val-Ala-PAB
0 ImagesMc- Val- Ala- PAB is a cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs).
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Val-Cit
0 ImagesVal-Cit is a cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs).
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BCN-PEG1-Val-Cit-PABC-OH
0 ImagesCat. No.: HY-130923BCN-PEG1-Val-Cit-PABC-OH is a cleavable 1 unit PEG ADC linker used in the synthesis of antibody-drug conjugates (ADCs). BCN-PEG1-Val-Cit-PABC-OH is a click chemistry reagent, it contains a BCN group that can undergo strain-promoted alkyne-azide cycloaddition (SPAAC) with molecules containing Azide groups.
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Mal-PEG2-Val-Cit-PABA-PNP
0 ImagesCat. No.: HY-131156CAS No.: 1345681-52-8Mal-PEG2-Val-Cit-PABA-PNP is a cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs).
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TCO-PEG1-Val-Cit-PABC-PNP TFA
0 ImagesCat. No.: HY-136100APurity: 99.69%TCO-PEG1-Val-Cit-PABC-PNP TFA is a cleavable 1 unit PEG ADC linker used in the synthesis of antibody-drug conjugates (ADCs). TCO-PEG1-Val-Cit-PABC-PNP TFA is a click chemistry reagent, which contains a TCO group that can undergo an inverse electron demand Diels-Alder reaction (iEDDA) with molecules containing Tetrazine groups.
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Mal-PEG1-Val-Cit-PABC-OH
0 ImagesCat. No.: HY-130944CAS No.: 2055041-37-5Mal-PEG1-Val-Cit-PABC-OH is a cleavable 1 unit PEG ADC linker used in the synthesis of antibody-drug conjugates (ADCs).
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Fmoc-Phe-Lys(Boc)-PAB-PNP
0 ImagesFmoc-Phe-Lys(Boc)-PAB-PNP is a cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs).
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Mal-amido-PEG2-Val-Cit-PAB-PNP
0 ImagesMal-amido-PEG2-Val-Cit-PAB-PNP is a cleavable 2 unit PEG ADC linker used in the synthesis of antibody-drug conjugates (ADCs).
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Mal-PEG2-VCP-NB
0 ImagesMal-PEG2-VCP-NB is a claevable ADC linker containing a Maleimide group, 2-unit PEG and a VCP NB.
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MC-Val-D-Cit-PAB-PNP
0 ImagesMC-Val-D-Cit-PAB-PNP is a peptide linker that can be used for the synthesis of Antibody-Drug Conjugates (ADCs). MC-Val-D-Cit-PAB-PNP can be used to construct antibody-drug conjugates loaded with ATR/CHK1 inhibitors.
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Phe-Lys(Fmoc)-PAB
0 ImagesPhe-Lys(Fmoc)-PAB is a cathepsin cleavable ADC linker used for the antibody-drug conjugates (ADCs).
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Mal-PEG1-Val-Cit-PAB-PNP
0 ImagesMal-PEG1-Val-Cit-PAB-PNP is a cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs).
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Fmoc-Phe-Lys(Trt)-PAB-PNP
0 ImagesFmoc-Phe-Lys(Trt)-PAB-PNP is a cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs).
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Mal-PEG2-Val-Cit-PAB-OH
0 ImagesMal-PEG2-Val-Cit-PAB-OH is a cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs). Mal-PEG2-Val-Cit-PAB-OH also can be used as a PROTAC linker that can be used in the synthesis of PROTACs.
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Mal-amide-PEG4-Val-Cit-PAB-OH
0 ImagesMal-amide-PEG4-Val-Cit-PAB-OH is a cleavable ADC linker containing a Maleimide group. Mal-amide-PEG4-Val-Cit-PAB-OH is used in the synthesis of antibody-drug conjugates (ADCs).
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Azido-PEG4-Val-Cit-PAB-OH
0 ImagesCat. No.: HY-140149CAS No.: 2055024-64-9Azido-PEG4-Val-Cit-PAB-OH is a cleavable 4 unit PEG ADC linker used in the synthesis of antibody-drug conjugates (ADCs). Azido-PEG4-Val-Cit-PAB-OH is also a PEG-based PROTAC linker that can be used in the synthesis of PROTACs. Azido-PEG4-Val-Cit-PAB-OH is a click chemistry reagent, it contains an Azide group and can undergo copper-catalyzed azide-alkyne cycloaddition reaction (CuAAc) with molecules containing Alkyne groups. It can also undergo strain-promoted alkyne-azide cycloaddition (SPAAC) reactions with molecules containing DBCO or BCN groups.
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TCO-PEG1-Val-Cit-PABC-OH
0 ImagesCat. No.: HY-130966Purity: 99.14%TCO-PEG1-Val-Cit-PABC-OH is a cleavable 1 unit PEG ADC linker used in the synthesis of antibody-drug conjugates (ADCs). TCO-PEG1-Val-Cit-PABC-OH is a click chemistry reagent, it contains a TCO group that can undergo an inverse electron demand Diels-Alder reaction (iEDDA) with molecules containing Tetrazine groups.
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MC-VC-PAB-NH2
0 ImagesCat. No.: HY-136132CAS No.: 1616727-20-8MC-VC-PAB-NH2 is a cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs).
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Mal-PEG2-Val-Cit-PABA
0 ImagesMal-PEG2-Val-Cit-PABA is a cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs).
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Fmoc-Gly3-Val-Cit-PAB
0 ImagesCat. No.: HY-136106CAS No.: 2647914-09-6Fmoc-Gly3-Val-Cit-PAB is a cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs).
