What does this research mean for the field?

Immobilizing a novel, rationally designed L-asparaginase variant (KHY-17-EcA) on functionalized multiwalled carbon nanotubes significantly enhances its thermal stability, resistance to proteolytic degradation, and targeted antileukemic activity. Novelty: ClaimNovelty.NOVEL_FINDING. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To engineer a less immunogenic L-asparaginase variant and covalently immobilize it onto multiwalled carbon nanotubes to overcome rapid proteolytic degradation, instability, and toxicity.

August 22, 2026Bioconjugate Chemistry

Immobilization of Novel l -asparaginase Variants on Functionalized Multiwalled Carbon Nanotubes Improves Stability, Resistance to Proteolytic Degradation, and Prolonged Antileukemic Activities

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Authors

BNBhagyashri Soumya Nayak SSSukanya Samanta SSSayantan Sarkar

Discussion

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Overview

In vitro study demonstrates enhanced stability and selective antileukemic activity of carbon nanotube-bound L-asparaginase, suggesting a promising strategy to improve leukemia treatment.

Key Points

To engineer a less immunogenic L-asparaginase variant and covalently immobilize it onto multiwalled carbon nanotubes to overcome rapid proteolytic degradation, instability, and toxicity.
Generated the KHY-17-EcA enzyme variant using site-directed mutagenesis and covalently immobilized both mutant and wild-type enzymes onto carboxyl-functionalized multiwalled carbon nanotubes (MWCNTs).
Evaluated biocatalytic activity, storage stability across various temperatures and pH levels, and proteolytic resistance against asparaginyl endopeptidase and cathepsin B over 24 hours.
Assessed in vitro cytotoxicity, kinetic parameters (Km), and apoptotic induction in human leukemia cell lines (Jurkat, MOLT-4, K562) compared to noncancerous control cells (HBEC-5i).
The MWCNT nanobiocatalysts achieved a 96% enzyme-immobilizing capacity, retained approximately 90% of their initial activity after 4 weeks of storage, and resisted proteolytic degradation after 24 hours of incubation.
Immobilized KHY-17-EcA exhibited a low Km of 0.312 mM, high substrate specificity, and markedly reduced glutaminase activity.
The immobilized variant triggered significant apoptotic cell death and nuclear morphological alterations in Jurkat, MOLT-4, and K562 leukemia cells while sparing noncancerous HBEC-5i cells.

Cite This Study

Nayak et al. (2026) studied this question.

synapsesocial.com/papers/6a895f53ca7ade938187ded7 https://doi.org/10.1021/acs.bioconjchem.6c00259

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August 22, 2026Bioconjugate Chemistry

Immobilization of Novel l -asparaginase Variants on Functionalized Multiwalled Carbon Nanotubes Improves Stability, Resistance to Proteolytic Degradation, and Prolonged Antileukemic Activities

View Full Paper

Ask AI

Bookmark

Authors

BNBhagyashri Soumya Nayak SSSukanya Samanta SSSayantan Sarkar

Discussion

Member takes

Overview

In vitro study demonstrates enhanced stability and selective antileukemic activity of carbon nanotube-bound L-asparaginase, suggesting a promising strategy to improve leukemia treatment.

Key Points

To engineer a less immunogenic L-asparaginase variant and covalently immobilize it onto multiwalled carbon nanotubes to overcome rapid proteolytic degradation, instability, and toxicity.
Generated the KHY-17-EcA enzyme variant using site-directed mutagenesis and covalently immobilized both mutant and wild-type enzymes onto carboxyl-functionalized multiwalled carbon nanotubes (MWCNTs).
Evaluated biocatalytic activity, storage stability across various temperatures and pH levels, and proteolytic resistance against asparaginyl endopeptidase and cathepsin B over 24 hours.
Assessed in vitro cytotoxicity, kinetic parameters (Km), and apoptotic induction in human leukemia cell lines (Jurkat, MOLT-4, K562) compared to noncancerous control cells (HBEC-5i).
The MWCNT nanobiocatalysts achieved a 96% enzyme-immobilizing capacity, retained approximately 90% of their initial activity after 4 weeks of storage, and resisted proteolytic degradation after 24 hours of incubation.
Immobilized KHY-17-EcA exhibited a low Km of 0.312 mM, high substrate specificity, and markedly reduced glutaminase activity.
The immobilized variant triggered significant apoptotic cell death and nuclear morphological alterations in Jurkat, MOLT-4, and K562 leukemia cells while sparing noncancerous HBEC-5i cells.

Cite This Study

Nayak et al. (2026) studied this question.

synapsesocial.com/papers/6a895f53ca7ade938187ded7 https://doi.org/10.1021/acs.bioconjchem.6c00259

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