ArticleScientific reports2020
Structures of the free and inhibitors-bound forms of bromelain and ananain from Ananas comosus stem and in vitro study of their cytotoxicity.
Article in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
15 citing papers in PubMed, 1 synthesis or guideline pooled it, 32 citations in OpenAlex.
- Exploring the Therapeutic Potential of Bromelain: Applications, Benefits, and Mechanisms.Nutrients · 2024Pooled it
- Identification of NF-κB pathway-related biomarkers in myocardial ischemia-reperfusion injury: based on transcriptomics analysis and RT-qPCR validation.Scientific reports · 2026Article
- Characterization of Bromelain-Soluble Sheepskin (Food science & nutrition · 2026Article
- Enzymatic Tenderization of Garden Snail Meat (Molecules (Basel, Switzerland) · 2026Article
- Evaluation of Microleakage Beneath Orthodontic Molar Bands Cemented With Resin-Modified Glass Ionomer Using Two Enamel Deproteinization Agents.International journal of dentistry · 2026Article
- 1,2,4-Thiadiazolidin-3,5-Diones as Inhibitors of Cysteine Proteases.Molecules (Basel, Switzerland) · 2025Article
- Oxidative Folding of a Two-Chain Protein Having Three Interchain Disulfide Bonds. Synthesis of Bromelain Inhibitor VI Through Native Chain Assembly.Chemistry (Weinheim an der Bergstrasse, Germany) · 2025Article
- A randomized controlled trial of Shengji ointment combined with bromelain in promoting healing of tendon-exposed diabetic foot wounds: integrated 16S rDNA sequencing and metabolomics analysis.Frontiers in pharmacology · 2025Article
- In-vitro and in-silico analyses of the thrombolytic potential of green kiwifruit.Scientific reports · 2024Article
- Comparative Analysis of the Immune Response and the Clinical Allergic Reaction to Papain-like Cysteine Proteases from Fig, Kiwifruit, Papaya, Pineapple and Mites in an Italian Population.Foods (Basel, Switzerland) · 2023Article
- Molecular Docking and In Vitro Studies of Ochratoxin A (OTA) Biodetoxification Testing Three Endopeptidases.Molecules (Basel, Switzerland) · 2023Article
- Anticancer properties of bromelain: State-of-the-art and recent trends.Frontiers in oncology · 2022Review
- Bromelain and Nisin: The Natural Antimicrobials with High Potential in Biomedicine.Pharmaceutics · 2021Review
- Collagenase Activity of Bromelain Immobilized at Gold Nanoparticle Interfaces for Therapeutic Applications.Pharmaceutics · 2021Article
- Anacaulase-Bcdb for Enzymatic Eschar Removal in Adult and Paediatric Thermal Burns: Clinical Evidence, Safety, and Therapeutic Positioning.Wound repair and regeneration : official publication of the Wound Healing Society [and] the European Tissue Repair SocietyReview
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The Ananas comosus stem extract is a complex mixture containing various cysteine proteases of the C1A subfamily, such as bromelain and ananain. This mixture used for centuries in Chinese medicine, has several potential therapeutic applications as anti-cancer, anti-inflammatory and ecchymosis degradation agent. In the present work we determined the structures of bromelain and ananain, both in their free forms and in complex with the inhibitors E64 and TLCK. These structures combined with protease-substrate complexes modeling clearly identified the Glu68 as responsible for the high discrimination of bromelain in favor of substrates with positively charged residues at P2, and unveil the reasons for its weak inhibition by cystatins and E64. Our results with purified and fully active bromelain, ananain and papain show a strong reduction of cell proliferation with MDA-MB231 and A2058 cancer cell lines at a concentration of about 1 μM, control experiments clearly emphasizing the need for proteolytic activity. In contrast, while bromelain and ananain had a strong effect on the proliferation of the OCI-LY19 and HL-60 non-adherent cell lines, papain, the archetypal member of the C1A subfamily, had none. This indicates that, in this case, sequence/structure identity beyond the active site of bromelain and ananain is more important than substrate specificity.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.