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Open research questions in Peptidase Inhibition and Analysis

106 gap statements mined from Peptidase Inhibition and Analysis papers in our 4.5M-paper local library, which holds 823 papers on the topic — drawn mostly from each paper's own stated research gap, future-work, challenge and limitation notes, and its abstract. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one.

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What the literature leaves open

  • Despite the inclusion of a recovery group, an important limitation of this study remains the duration of follow-up for mid- and low-dose groups, which was insufficient to reach definitive conclusions on PCZ half-life.

    Preclinical safety evaluation of the dipeptidyl peptidase 3 inhibiting antibody Procizumab in rodents and non-human primates · 2026 · DOI

  • The findings of this study reveal 2 previously unstudied consequences of intravascular hemolysis associated with a hypertensive crisis: (1) an increase in PEP activity caused by cell lysis, resulting in higher Ang II-degrading capacities, and (2) a concomitant reduction in ACE activity, resulting in lower Ang II-forming capacities from Ang I. These hemolysis-driven  Journals (/journals)   changes in RAS components may contribute to a response that occurs during severe SBP ®   Books (/booksbrowse)  elevations. Further studies are needed to assess the modulation of PEP and ACE activity as a result of intravascular hemolysis in vivo, to identify the causal factor(s) for ACE inhibition, and its significance in acute severe hypertensive settings such as hypertensive crises and malignant 

    Severe Acute Hypertension Causes Hemolysis With Release of PEP and ACE Inhibitor · 2026 · DOI

  • Given that DcIAP1 is an anti-apoptotic protein and its role during viral infection remains to be elucidated, this https://doi. Thus, this antibody offers a useful tool for basic detection applications, but its broader utility remains to be established. Importantly, its applicability in immunoprecipitation, immuno- histochemistry, or neutralization assays has not been tested and requires future validation. Relatively few studies have been conducted on the biological functions of DcIAP1 in poultry. Specific antibodies targeting duck cIAP1 have been rarely reported.

    Cloning, Bioinformatics Analysis, and Preparation of Polyclonal Antibody for Duck Cellular Inhibitor of Apoptosis Protein 1 · 2026 · DOI

  • However, although the in vivo model demonstrated a clear effect on tumor growth, the precise con- tribution of NTAN1 to infiltrative behavior within the brain microenvironment remains to be further defined. While the direct substrates of NTAN1 in GBM remain unknown, the present data suggest that its effects are likely mediated through broader cellular programs rather than a single downstream target. Although its role in GBM has not been previously characterized, dysregulated protein turnover has been increasingly recognized as an important feature of malignant progression.

    NTAN1 Promotes Glioblastoma Malignant Progression and Is a Novel Prognostic Factor of Poor Prognosis · 2026 · DOI

  • Taken together, we provide a human iPSC-derived model focusing on the hepatocyte-specific contribution to progression of steatosis. We could link DPP4 activity to the steatosis phenotype and show that its inhibition with VILDA has effects on metabolism- and inflammation-associated gene expression during steatosis. Since we performed global transcriptomic analyses of the effects of VILDA with only one cell line, these can only provide first insights into possible effects, and more in- depth analyses are needed. In the future, human DPP4 knockout HLCs, embedded in a multicellular liver model, could increase our understanding of the mechanisms of DPP4 through health and disease and help in further elucidating the interplay between the distinct cell types of the liver.

    DPP4 inhibition affects metabolism and inflammation associated pathways in hiPSC-derived steatotic HLCs · 2026 · DOI

  • Therefore, future research could explore the connection between lactylation, alternative splicing and MI identify new therapeutic targets for MI.

    Characterization of protein lactylation in healthy and ischemic mouse hearts · 2025 · DOI

  • This points to a clear gap in the research and indicates that the links suggested between MMP9, colorectal cancer, and neuropathy are, at this stage, hypotheses grounded in existing but separate pieces of evidence.

    MMP9: Link between neuropathy and colorectal cancer? · 2024 · DOI

  • The critical molecular and cellular mech- anisms driving renal fibrosis are not well understood. However, the exact subtypes of myofibroblasts and their origin respon- sible for fibrosis remain elusive.

    Targeting fibroblast activation protein-α to treat renal fibrosis · 2026 · DOI

  • Finally, the deep molecular mechanism of the role of the cisplatin + FAP‑D needs to be investigated.

    A fibroblast activation protein degrader enhances cisplatin sensitivity in non‑small cell lung cancer · 2026 · DOI

  • A Cyclic Peptide Epitope of an Under-Explored VEGF-B Loop 1 Demonstrated In Vivo Anti- Angiogenic and Anti-Tumor Activities.

    A dimer peptide ligand of vascular endothelial growth factor slows the progression of human gastric tumors in mouse xenografts · 2026 · DOI

  • To our knowledge, however, a function as a transcription factor in the prostate has not been described so far, but according to these findings, it could also explain an increased mRNA expression.

    Therapeutic and Diagnostic Potential of Folic Acid Receptors and Glycosylphosphatidylinositol (GPI) Transamidase in Prostate Cancer · 2024 · DOI

  • , during cardiogenic shock) should be investigated in follow-up human studies.

    Safety, tolerability, and pharmacokinetics/-dynamics of the dipeptidyl peptidase 3-inhibiting antibody Procizumab in a first-in-human trial · 2026 · DOI

  • A much larger sample set-up is warranted to prevent misinterpretation caused by inter- individual

    DPP4 inhibition affects metabolism and inflammation associated pathways in hiPSC-derived steatotic HLCs · 2026 · DOI

  • Diabetes mellitus poses a major global health burden and is intricately linked to cardiovascular complications, yet the spatial molecular landscape of diabetic vasculopathy remains poorly defined.

    Spatially Characterized Aortic Proteome Reveals Novel Regional Signatures and Glucocorticoid Receptor/Dipeptidase 1 Axis in Diabetic Vasculopathy · 2026 · DOI

  • Because habitual physical training itself perturbs oxidative and mineral homeostasis, athletes who smoke sit at the intersection of two opposing physiological pressures, making them a biologically informative --- yet under-studied --- population in which to examine smoking-related biochemical change.

    Effect of Smoking on Serum Prolidase Levels and Selected Biochemical Variables Among Athletes in Kirkuk City · 2026 · DOI

  • These findings support further investigation of DPP3 as a potential biomarker for diuretic responsiveness in acute HF.

    Circulating dipeptidyl peptidase 3 levels in acute heart failure: insights from the PUSH-AHF trial · 2026 · DOI

  • A few studies have profiled substrate specificity for cleavage of N-terminal Met, but none have systematically done so using N-terminal Met analogues.

    Systematic Profiling of Peptide Substrate Specificity in N-Terminal Processing by Methionine Aminopeptidase Using mRNA Display and an Unnatural Methionine Analogue · 2026 · DOI

  • While several studies have examined the application of 68 Ga‐FAPI in myocardial infarction (MI), research on the use of 177 Lu‐FAPI for the treatment of MI is still scarce.

    Application of 68 Ga‐ and 177 Lu‐Labeled FAP Inhibitor in Evaluation and Treatment of Cardiac Fibrosis After Myocardial Infarction · 2025 · DOI

  • However, there are few reports on whether mitochondrial homeostasis is involved in regulating DP gingival lesions.

    PGC-1α-mediated mitochondrial homeostasis imbalance aggravated gingival lesions of diabetic periodontitis by disrupting ECM remodeling of human gingival fibroblast · 2025 · DOI

  • Asparagine endopeptidase (AEP) is ubiquitously expressed in both physiological and pathological contexts, yet its precise role and functional mechanism in breast cancer remain elusive.

    Asparagine endopeptidase regulates lysosome homeostasis via modulating endomembrane phosphoinositide composition · 2025 · DOI

  • How NMTs interact with ribosomes and gain timely and specific access to their substrates remains unknown.

    Mechanism of cotranslational protein N-myristoylation in human cells · 2025 · DOI

  • However, the mechanism by which aminopeptidase affects attachment remains unclear.

    Extracellular aminopeptidase regulates exopolysaccharide production of Pseudomonas aeruginosa via quorum sensing · 2025 · DOI

  • Recent studies have implicated pyrroline-5-carboxylate reductase 1 (PYCR1), a key enzyme in proline biosynthesis, in cancer progression, yet its specific role in lung cancer remains unclear.

    PYCR1 drives lung cancer progression through functional interactions with EGFR and TLR signaling pathways · 2025 · DOI

  • Although their functional importance is recognized, systematic characterization of NATs remains unexplored in Oryza sativa .

    Systematic characterization of the N-terminal acetyltransferase gene family reveals that OsNAA30 regulates plant height and tillering in rice · 2025 · DOI

  • BACKGROUND: Fibroblast activation protein-α (FAPα), a transmembrane protein highly expressed in rheumatoid arthritis (RA) synovium, is postulated to drive inflammatory cascades, yet its mechanistic role remains elusive.

    Fibroblast activation protein-α drives rheumatoid arthritis inflammation through the AKT/mTOR signaling pathway and its therapeutic effect by Wangbi granules · 2025 · DOI

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106 gap statements have been mined from Peptidase Inhibition and Analysis papers in our 4.5M-paper local library, which holds 823 papers on the topic; the gaps come from whichever of those papers state one. They are mostly the research gaps the authors state and the papers' abstracts, plus future-work, limitations and challenges passages. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one, so you can read the original claim in context.

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