What does this research mean for the field?

The inclusion of a C-terminal serine-proline (SP) motif adjacent to the RGD sequence in peptide-functionalized alginate hydrogels is essential for promoting robust human mesenchymal stem cell attachment and expansion. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

Investigate how peptide spacer sequences, C-terminal flanking motifs, and backbone conjugation chemistry affect alginate hydrogel bioactivity for human mesenchymal stem cell (hMSC) expansion.

August 22, 2026Bioconjugate Chemistry

Peptide Sequence and Backbone Conjugation Chemistry Direct Alginate Hydrogel Bioactivity for Human Mesenchymal Stem Cell Expansion

View Full Paper

Ask AI

Bookmark

Authors

EBEli R. Broman PMPranati P. Mondkar MDMarizela Delic-Schlumbohm

Discussion

Member takes

Overview

In vitro study demonstrates that C-terminal SP motifs and verified N-terminal conjugation enhance hMSC expansion on alginate hydrogels, indicating key design rules for cell therapies.

Key Points

Investigate how peptide spacer sequences, C-terminal flanking motifs, and backbone conjugation chemistry affect alginate hydrogel bioactivity for human mesenchymal stem cell (hMSC) expansion.
Characterized alginate backbone composition, degree of substitution, and coupling efficiency using quantitative 1H NMR spectroscopy with peak deconvolution.
Synthesized four tailored peptide sequences (GGFTRGD, CGFTRGD, GGFTRGDSP, CGFTRGDSP) utilizing phenylalanine and threonine spacers to prevent phenolic side reactions and boost solubility.
Conjugated peptides using DMTMM chemistry to confirm N-terminal amide coupling over arginine side-chain reactions, then evaluated hMSC attachment, spreading, and proliferation on calcium-crosslinked hydrogels.
1H NMR verified precise degree of substitution and confirmed selective amide bond formation at the peptide N-terminus without unwanted side-reactions at the arginine guanidinium group.
Hydrogels functionalized with GGFTRGD or CGFTRGD failed to support hMSC expansion.
Inclusion of the C-terminal SP motif (GGFTRGDSP or CGFTRGDSP) yielded robust cell attachment, spreading, and a >10-fold increase in final cell number compared to motifs lacking SP.

Cite This Study

Broman et al. (2026) studied this question.

synapsesocial.com/papers/6a895f0dca7ade938187d528 https://doi.org/10.1021/acs.bioconjchem.6c00209

View Full Paper

Ask AI

Bookmark

August 22, 2026Bioconjugate Chemistry

Peptide Sequence and Backbone Conjugation Chemistry Direct Alginate Hydrogel Bioactivity for Human Mesenchymal Stem Cell Expansion

View Full Paper

Ask AI

Bookmark

Authors

EBEli R. Broman PMPranati P. Mondkar MDMarizela Delic-Schlumbohm

Discussion

Member takes

Overview

In vitro study demonstrates that C-terminal SP motifs and verified N-terminal conjugation enhance hMSC expansion on alginate hydrogels, indicating key design rules for cell therapies.

Key Points

Investigate how peptide spacer sequences, C-terminal flanking motifs, and backbone conjugation chemistry affect alginate hydrogel bioactivity for human mesenchymal stem cell (hMSC) expansion.
Characterized alginate backbone composition, degree of substitution, and coupling efficiency using quantitative 1H NMR spectroscopy with peak deconvolution.
Synthesized four tailored peptide sequences (GGFTRGD, CGFTRGD, GGFTRGDSP, CGFTRGDSP) utilizing phenylalanine and threonine spacers to prevent phenolic side reactions and boost solubility.
Conjugated peptides using DMTMM chemistry to confirm N-terminal amide coupling over arginine side-chain reactions, then evaluated hMSC attachment, spreading, and proliferation on calcium-crosslinked hydrogels.
1H NMR verified precise degree of substitution and confirmed selective amide bond formation at the peptide N-terminus without unwanted side-reactions at the arginine guanidinium group.
Hydrogels functionalized with GGFTRGD or CGFTRGD failed to support hMSC expansion.
Inclusion of the C-terminal SP motif (GGFTRGDSP or CGFTRGDSP) yielded robust cell attachment, spreading, and a >10-fold increase in final cell number compared to motifs lacking SP.

Cite This Study

Broman et al. (2026) studied this question.

synapsesocial.com/papers/6a895f0dca7ade938187d528 https://doi.org/10.1021/acs.bioconjchem.6c00209

Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

View Full Paper

Ask AI

Bookmark