Data · dataset · 2026
Identification and functional study of a novel antimicrobial peptide, QUB-2014, from the skin secretion of the frog, Phyllomedusa tomopterna
Listed in ZivaHub and Deakin Research Online and DMU Figshare and UCL Research Data Repository — shown once because both records carry DOI 10.17034/32631804.v1
Amphibian skin secretion contains various bioactive compounds.
Description
Among these, antimicrobial peptides (AMPs) are vitally important as they protect amphibians from the attack of microorganisms. Some studies showed that AMPs are considered the new potential antibiotic candidates for humans and these molecules are also beneficial for solving antibiotic resistance.
In this thesis, the aims are to identify a novel peptide from the skin secretion of Phyllomedusa tomopterna and to study its activities. Molecular cloning was utilised to acquire a full-length cDNA sequence from lyophilised skin secretion, and then the cDNA sequence was translated through ExPasy translating tool to obtain the peptide sequence of QUB-2014. After that, the peptide was synthesised through solid-phase peptide synthesis, and the crude peptide was purified via reverse-phase HPLC (RP-HPLC).
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MALDI-TOF mass spectrometry was used further to confirm the target peptide from the RP-HPLC fractions. Significantly, antimicrobial assays showed that this novel peptide QUB-2014 had a broad-spectrum antimicrobial activity against E.coli (ATCC CRM 8739), S.aureus (ATCC CRM 6538) and C.albicans (ATCC CRM 10231) with minimum inhibitory concentrations of 16 μM, 4 μM and 32 μM, respectively. This peptide also showed anticancer cell proliferative activity on lung adenocarcinoma cells at a concentration of 10-4 M. On the other hand, the haemolytic activity of this novel peptide was relatively weak, which was approximately below 10% of haemolytic rate from the concentration of 1 μM to 32 μM. Taken together, peptide QUB-2014 displayed a therapeutic potential to become an antimicrobial agent, and it may offer a possibility in cancer research due to its anticancer activity.<br><br><i>Thesis embargoed until 31 December 2026</i>.
Links
Where it is published
- DOI doi.org/10.17034/32631804.v1 ↗
DOI / persistent id · from zivahub uct ac za
Catalogue records · 1
- OAI-PMH record api.figshare.com/v2/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai%3Af… ↗
metadata API · from zivahub uct ac za
Topics
- From keywords
- Earth & Environmental Science · Earth & Environmental Science · Earth & Environmental Science · Earth & Environmental Science · Life Sciences · Life Sciences · Life Sciences · Life Sciences
- Inferred from text
- Cancer 75% · Mass spectrometry 75%
Provenance · 4 source records, 15 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| ZivaHub | oai:figshare.com:article/32631804 | 10 d ago | JSON v1 |
| Deakin Research Online | oai:figshare.com:article/32631804 | 10 d ago | JSON v1 |
| DMU Figshare | oai:figshare.com:article/32631804 | 10 d ago | JSON v1 |
| UCL Research Data Repository | oai:figshare.com:article/32631804 | 10 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| concepts[disease].local:disease:cancer | enrichment · zivahub uct ac za | keyword-concept-rules@1.0.0 | title+description (75%) |
| concepts[field].local:field:earth-environmental | mapping · dro deakin edu au | connector:dro_deakin_edu_au@1.0.0 | |
| concepts[field].local:field:earth-environmental | mapping · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| concepts[field].local:field:earth-environmental | mapping · figshare dmu ac uk | connector:figshare_dmu_ac_uk@1.0.0 | |
| concepts[field].local:field:earth-environmental | mapping · rdr ucl ac uk | connector:rdr_ucl_ac_uk@1.0.0 | |
| concepts[field].local:field:life-sciences | mapping · rdr ucl ac uk | connector:rdr_ucl_ac_uk@1.0.0 | |
| concepts[field].local:field:life-sciences | mapping · dro deakin edu au | connector:dro_deakin_edu_au@1.0.0 | |
| concepts[field].local:field:life-sciences | mapping · figshare dmu ac uk | connector:figshare_dmu_ac_uk@1.0.0 | |
| concepts[field].local:field:life-sciences | mapping · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| concepts[modality].local:modality:mass-spectrometry | enrichment · zivahub uct ac za | keyword-concept-rules@1.0.0 | title+description (75%) |
| description | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | /metadata/dc/description |
| license_text | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| publication_date | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| title | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | /metadata/dc/title |