GO:1901652 response to peptide: Signaling Pathway, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:1901652 response to peptide is a biological process defined as any process that results in a change in state or activity of a cell or an organism as a result of a peptide stimulus [1, 3, 6].
• Peptide stimuli can trigger diverse cellular responses including movement, secretion, enzyme production, and gene expression changes [1, 6].
• Key genes and proteins involved include ANXA1, HSP60, DEC-205, and various peptide receptors that mediate cellular responses [1, 3, 6].
• Response to peptide is critical in immunology, neuroscience, diabetes, and cancer biology, with therapeutic peptides being developed for multiple diseases [1, 3, 6, 7].
• CRISPR knockout, knock-in, and overexpression models enable causal interrogation of genes mediating peptide responses [1, 3, 6].
• EDITGENE provides comprehensive CRISPR services including library screening and bioinformatics to study response to peptide pathways.
Description
The Gene Ontology term GO:1901652 response to peptide describes any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a peptide stimulus [1, 3, 6]. Peptides are short chains of amino acids that can act as signaling molecules, hormones, neurotransmitters, or immunomodulators, and cells have evolved sophisticated mechanisms to sense and respond to them [6, 7]. This process is fundamental to intercellular communication and is implicated in a wide range of physiological and pathological contexts, from immune responses to neuronal survival [1, 6]. Researchers study response to peptide to understand how cells interpret extracellular peptide signals and translate them into functional outcomes. For example, the Tat-NTS peptide protects neurons against cerebral ischemia-reperfusion injury by modulating ANXA1 SUMOylation in microglia, illustrating how a specific peptide can trigger a protective cellular response. Similarly, the heat shock protein 60 peptide DiaPep277 elicits immunological efficacy in clinical type I diabetes, demonstrating the therapeutic potential of targeting peptide response pathways. In cancer immunotherapy, a novel DEC-205 binding peptide has been identified to develop dendritic cell-targeting nanovaccines, highlighting the importance of peptide recognition in immune activation. Peptide-based supramolecular vaccine systems are also being engineered to elicit robust immune responses. Understanding the molecular players and mechanisms of response to peptide is therefore essential for developing new diagnostics and therapeutics.
response to peptide At A Glance
| GO ID | GO:1901652 |
|---|---|
| GO term | response to peptide |
| Ontology | biological_process |
| Synonym | None |
| Definition | Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a peptide stimulus. |
| Major function | Mediating cellular and organismal responses to peptide signals, including changes in gene expression, secretion, and movement. |
| Related processes | Signal transduction, immune response, hormone signaling, neuroprotection. |
| Key regulators | Peptide receptors, ANXA1, HSP60, DEC-205, and downstream signaling pathways. |
What Is GO:1901652?
GO:1901652 response to peptide is defined as any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a peptide stimulus. This term encompasses the detection of a peptide signal, signal transduction, and the downstream cellular and organismal responses that occur following exposure to peptides.
Why Is response to peptide Important in Cell Biology?
Response to peptide is a fundamental biological process that underpins intercellular communication and organismal adaptation to environmental cues. It is essential for normal physiology, including immune surveillance, neuronal survival, and metabolic regulation, and its dysregulation contributes to diseases such as cancer, diabetes, and neurodegeneration [1, 3, 6]. Understanding this process at the molecular level enables the development of peptide-based therapeutics and diagnostics, as evidenced by ongoing clinical trials and preclinical studies [6, 7].
• Mediates immune responses to peptide antigens, critical for vaccine development and immunotherapy [3, 7].
• Regulates neuronal survival and protection against ischemia-reperfusion injury.
• Modulates metabolic and endocrine functions, as seen in C-peptide response to arginine in diabetic subjects.
• Plays a role in autoimmune diseases such as type I diabetes through HSP60 peptide therapy.
• Enables targeted imaging of treatment response using phage display peptide probes.
• Facilitates the design of stimuli-responsive peptide amphiphiles for biomedical applications.
• Underlies the development of peptide-based nanovaccines for cancer.
• Involved in engineering disease analyte-responsive peptide self-assembly for biosensing.
• Provides a framework for understanding how cells interpret peptide hormones and neurotransmitters.
• Offers opportunities for CRISPR-based functional genomics to identify novel regulators.
What Happens During response to peptide?
Peptide Recognition and Binding
In simple terms: The cell detects a peptide signal by binding it to specific receptors or interacting proteins.
The first step in response to peptide is the recognition of the peptide stimulus by cellular components. This can involve direct binding to cell surface receptors, such as G-protein coupled receptors or receptor tyrosine kinases, or interaction with soluble proteins like ANXA1. For example, the Tat-NTS peptide interacts with ANXA1 in microglia, leading to downstream effects. Similarly, DEC-205 binding peptides are recognized by dendritic cells to initiate immune responses. The specificity of this recognition determines the nature of the subsequent response.
Signal Transduction and Amplification
In simple terms: Once bound, the signal is relayed inside the cell through a series of molecular switches.
Following peptide binding, intracellular signaling cascades are activated. These often involve post-translational modifications such as SUMOylation, phosphorylation, and ubiquitination. In the case of Tat-NTS peptide, ANXA1 SUMOylation in microglia is a key event that mediates neuroprotection. Heat shock protein 60 peptide DiaPep277 modulates immune signaling in type I diabetes, likely through interactions with toll-like receptors and downstream pathways. These signaling events amplify the initial peptide stimulus and lead to diverse cellular outcomes.
Cellular and Organismal Responses
In simple terms: The cell changes its behavior, such as moving, secreting substances, or altering gene expression.
The ultimate outcome of response to peptide is a change in cell state or activity. This can manifest as changes in gene expression, secretion of cytokines or hormones, cell movement, or enzyme production. For instance, DiaPep277 therapy in type I diabetes results in immunological efficacy, likely through modulation of T-cell responses. In cancer immunotherapy, DEC-205 binding peptide nanovaccines induce dendritic cell activation and antigen presentation, leading to antitumor immunity. These responses are critical for both normal physiology and disease pathology.
Integration with Other Signaling Pathways
In simple terms: Peptide responses are integrated with other signals to produce a coordinated cellular outcome.
Response to peptide does not occur in isolation; it is integrated with other signaling pathways such as those triggered by growth factors, cytokines, and stress signals. For example, the neuroprotective effect of Tat-NTS peptide involves cross-talk with inflammatory pathways in microglia. Similarly, peptide-based supramolecular vaccine systems can be designed to co-deliver adjuvants to enhance immune responses. This integration ensures that the cellular response is appropriate to the context.
Feedback and Termination
In simple terms: The response is eventually turned off to prevent overactivity.
To maintain homeostasis, response to peptide is subject to negative feedback regulation. This can involve desensitization of receptors, degradation of the peptide, or induction of inhibitory proteins. For example, in C-peptide response to arginine in insulin-dependent diabetic subjects, the response is blunted compared to healthy controls, indicating impaired feedback or signaling. Understanding these termination mechanisms is important for therapeutic interventions that aim to modulate peptide responses.
Key Genes Involved in GO:1901652 response to peptide
The following genes and proteins are key players in the response to peptide process, as supported by the verified literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| ANXA1 | Mediates anti-inflammatory and neuroprotective effects in microglia via SUMOylation | Target for cerebral ischemia-reperfusion injury therapy |
| HSP60 | Chaperone protein; its peptide DiaPep277 modulates immune responses | Used in clinical trials for type I diabetes |
| DEC-205 | Endocytic receptor on dendritic cells; binds peptides for antigen presentation | Target for cancer nanovaccines |
| C-peptide | Connecting peptide of proinsulin; marker of beta-cell function | Assessed in response to arginine in diabetes |
| Bevacizumab | Monoclonal antibody targeting VEGF; peptide probes image its response | Used in phage display for imaging early treatment response |
| TLR4 | Toll-like receptor 4; recognizes peptide ligands and triggers immune signaling | Implicated in DiaPep277 mechanism |
| MHC class II | Presents peptide antigens to CD4+ T cells | Central to peptide vaccine responses |
| TCR | T cell receptor; recognizes peptide-MHC complexes | Key in adaptive immune response to peptides |
| GPR | G-protein coupled receptors; bind peptide hormones and neurotransmitters | Mediate diverse peptide responses |
| Integrins | Cell adhesion receptors; can bind peptide motifs | Involved in peptide amphiphile interactions |
| SUMO1 | Small ubiquitin-like modifier; conjugates to ANXA1 | Regulates ANXA1 function in neuroprotection |
| NF-κB | Transcription factor; activated by peptide stimuli | Drives gene expression in response to peptides |
| MAPK | Mitogen-activated protein kinases; signal downstream of peptide receptors | Mediate cellular responses to peptides |
| PI3K/Akt | Survival signaling pathway; activated by peptide growth factors | Promotes cell survival in response to peptides |
| Caspase | Proteases involved in apoptosis; modulated by peptide signals | Cell death regulation in response to peptides |
| FoxP3 | Regulatory T cell transcription factor; induced by tolerogenic peptides | Immune tolerance in peptide therapy |
| IFN-γ | Cytokine produced in response to peptide antigens | Marker of Th1 immune response |
| IL-10 | Anti-inflammatory cytokine; induced by regulatory peptides | Mediates tolerance in peptide therapy |
How Is response to peptide Regulated?
Response to peptide is regulated at multiple levels, including receptor expression and desensitization, intracellular signaling feedback loops, and post-translational modifications. For example, ANXA1 SUMOylation is a key regulatory event in microglia that mediates the neuroprotective effects of Tat-NTS peptide. In type I diabetes, DiaPep277 therapy modulates immune responses, likely through regulatory T cell induction and cytokine shifts. Additionally, peptide self-assembly can be engineered to respond to disease analytes, providing a synthetic regulation mechanism. These regulatory mechanisms ensure that responses are appropriate and self-limiting.
response to peptide and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| ANXA1 | Cerebral ischemia-reperfusion injury | Knockout mice, microglia-specific SUMOylation mutants |
| HSP60 | Type I diabetes | NOD mice, humanized immune system mice |
| DEC-205 | Cancer | Dendritic cell-targeting nanovaccine in tumor-bearing mice |
| C-peptide | Diabetes | Arginine stimulation test in diabetic models |
| VEGF | Cancer (bevacizumab response) | Xenograft models with phage display imaging |
Cerebral Ischemia-Reperfusion Injury
Response to peptide plays a critical role in neuroprotection following cerebral ischemia-reperfusion injury. The Tat-NTS peptide protects neurons by modulating ANXA1 SUMOylation in microglia, reducing inflammation and cell death. This highlights the therapeutic potential of targeting peptide response pathways in stroke and other ischemic conditions.
Type I Diabetes
In type I diabetes, the heat shock protein 60 peptide DiaPep277 has shown immunological efficacy in clinical trials, likely by modulating autoimmune responses against pancreatic beta cells. Additionally, C-peptide response to arginine is impaired in insulin-dependent diabetic subjects, reflecting beta-cell dysfunction. These findings underscore the importance of peptide responses in diabetes pathogenesis and treatment.
Cancer Immunotherapy
Peptide-based nanovaccines targeting DEC-205 on dendritic cells have been developed to elicit antitumor immunity. Peptide-based supramolecular vaccine systems are also being engineered to enhance immune responses against cancer. These approaches exploit the response to peptide process to activate the immune system against tumors.
Imaging and Treatment Monitoring
Phage display peptide probes have been used for imaging early response to bevacizumab treatment, demonstrating the utility of peptide-based agents in monitoring therapeutic outcomes. This application relies on the specific response to peptide signals in the tumor microenvironment.
From response to peptide-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does ANXA1 mediate Tat-NTS peptide neuroprotection? | ANXA1 knockout mice with ischemia-reperfusion injury |
| Can DEC-205 targeting enhance cancer vaccine efficacy? | DEC-205 knockout mice or dendritic cell-specific knock-in |
| What is the role of HSP60 peptide in type I diabetes? | HSP60 transgenic or knockout NOD mice |
| How does C-peptide response to arginine change in diabetes? | Insulin-dependent diabetic subjects and animal models |
| Can peptide self-assembly be engineered for analyte response? | In vitro peptide amphiphile systems with point mutations |
| What genes regulate response to peptide in immune cells? | CRISPR library screening in primary immune cells |
How to Study the response to peptide Process
| Method | What It Measures | Typical Application |
|---|---|---|
| CRISPR knockout screening | Gene essentiality for peptide response | Identify novel regulators in immune cells |
| Phage display | Peptide binding specificity and imaging | Develop probes for treatment monitoring |
| Peptide self-assembly assays | Nanostructure formation and responsiveness | Engineer smart biomaterials [2, 4] |
| ELISPOT | Cytokine-secreting cells | Measure T-cell responses to peptides |
| Flow cytometry | Cell surface markers and intracellular signaling | Analyze immune cell activation |
| Proteomics | Protein expression and modifications | Study SUMOylation of ANXA1 |
| C-peptide assay | Beta-cell function | Assess diabetes progression |
| Nanovaccine characterization | Particle size, zeta potential, antigen loading | Develop dendritic cell-targeting vaccines |
CRISPR Screening
Genome-wide CRISPR knockout or activation screens can identify genes that regulate response to peptide. For example, screening in dendritic cells exposed to DEC-205 binding peptides could reveal novel regulators of antigen presentation. Similarly, screens in microglia treated with Tat-NTS peptide could uncover modulators of ANXA1 SUMOylation.
Phage Display
Phage display peptide probes are powerful tools for identifying peptides that bind specific targets and for imaging responses. This method has been used to develop probes for imaging early response to bevacizumab treatment. It can also be applied to discover novel peptide ligands that trigger specific cellular responses.
Peptide Self-Assembly and Nanotechnology
Engineering peptide amphiphiles that self-assemble in response to disease analytes enables the creation of smart biomaterials [2, 4]. These systems can be used to study peptide-induced cellular responses and to develop biosensors. For instance, stimuli-responsive self-assembly disassembly in peptide amphiphiles can endow tunable piezoelectric response.
Immunological Assays
ELISPOT, flow cytometry, and cytokine profiling are used to measure immune responses to peptides. In type I diabetes, DiaPep277 therapy was evaluated by immunological efficacy, including T-cell proliferation and cytokine secretion. These assays are essential for clinical development of peptide therapeutics.
How CRISPR Can Be Used to Study GO:1901652 response to peptide
Knockout
CRISPR knockout of genes such as ANXA1 or DEC-205 can abolish specific responses to peptides, providing causal evidence for their roles. For example, ANXA1 knockout mice would be expected to lose the neuroprotective effect of Tat-NTS peptide. Similarly, DEC-205 knockout dendritic cells would fail to respond to DEC-205 binding peptides, impairing vaccine efficacy.
Point Mutation
Introducing point mutations in genes like ANXA1 to prevent SUMOylation can dissect the specific post-translational modification required for peptide response. Point mutations in peptide receptors can also identify critical residues for ligand binding and signaling.
Knock-in
Knock-in of tagged versions of proteins such as ANXA1 or DEC-205 enables visualization and biochemical analysis of peptide-induced trafficking and interactions [1, 3]. Knock-in of humanized peptide receptors can create models for testing human-specific peptide therapeutics.
Overexpression
Overexpression of genes like HSP60 or DEC-205 can enhance peptide responses and amplify downstream signaling, useful for studying gain-of-function effects [6, 3]. Overexpression of peptide amphiphiles in cells can also be used to study self-assembly in vivo.
How EDITGENE Supports response to peptide Research
Researchers studying response to peptide-related genes often need to determine whether a candidate gene is causally involved in mediating cellular responses to peptide stimuli. EDITGENE provides a comprehensive suite of CRISPR services to enable such functional studies, from knockout to knock-in and overexpression, as well as high-throughput screening and bioinformatics support.
Contact EDITGENE today to design your custom CRISPR model for response to peptide research.
Frequently Asked Questions About response to peptide
What is GO:1901652 response to peptide?
GO:1901652 is a Gene Ontology biological process term defined as any process that results in a change in state or activity of a cell or an organism as a result of a peptide stimulus [1, 3, 6].
What genes are involved in response to peptide?
Key genes include ANXA1, HSP60, DEC-205, C-peptide, and various receptors and signaling molecules [1, 3, 6, 8].
How is response to peptide studied?
Methods include CRISPR screening, phage display, immunological assays, and peptide self-assembly studies [3, 5, 6, 4].
What diseases are associated with response to peptide?
Diseases include cerebral ischemia-reperfusion injury, type I diabetes, and cancer [1, 6, 3].
What is the role of ANXA1 in response to peptide?
ANXA1 mediates neuroprotective effects of Tat-NTS peptide via SUMOylation in microglia.
How does DEC-205 contribute to peptide responses?
DEC-205 binds peptides for antigen presentation in dendritic cells, enabling cancer immunotherapy.
Can peptides be used as therapeutics?
Yes, peptides like DiaPep277 and Tat-NTS are in clinical or preclinical development for diabetes and stroke [6, 1].
What is C-peptide response to arginine?
It is a measure of beta-cell function, often impaired in insulin-dependent diabetes.
How can CRISPR help study response to peptide?
CRISPR knockout, knock-in, and overexpression models enable causal interrogation of genes in peptide response pathways [1, 3, 6].
What services does EDITGENE offer for response to peptide research?
EDITGENE provides CRISPR knockout, point mutation, knock-in, overexpression, library screening, and bioinformatics services.
Conclusion
GO:1901652 response to peptide is a fundamental biological process that mediates cellular and organismal responses to peptide stimuli. It is critical for immune function, neuroprotection, metabolic regulation, and cancer immunotherapy, with key genes such as ANXA1, HSP60, and DEC-205 playing central roles [1, 3, 6]. Understanding this process offers opportunities for therapeutic intervention, and CRISPR-based models are invaluable for dissecting the underlying mechanisms. EDITGENE's comprehensive services support researchers in this endeavor.
References
- 1. Zhou H et al.. 2023. Tat-NTS peptide protects neurons against cerebral ischemia-reperfusion injury via ANXA1 SUMOylation in microglia.. Theranostics 13(15):5561-5583 PMID: 37908731
- 2. Gupta D et al.. 2023. Stimuli-Responsive Self-Assembly Disassembly in Peptide Amphiphiles to Endow Block-co-Fibers and Tunable Piezoelectric Response.. ACS Appl Mater Interfaces 15(21):25110-25121 PMID: 35767722
- 3. Zheng J et al.. 2024. Identification of a novel DEC-205 binding peptide to develop dendritic cell-targeting nanovaccine for cancer immunotherapy.. J Control Release 373:568-582 PMID: 39067792
- 4. Yu S et al.. 2024. Engineering disease analyte response in peptide self-assembly.. J Mater Chem B 12(42):10757-10769 PMID: 39382032
- 5. Cao Q et al.. 2011. Phage display peptide probes for imaging early response to bevacizumab treatment.. Amino Acids 41(5):1103-12 PMID: 20232090
- 6. Huurman VA et al.. 2008. Immunological efficacy of heat shock protein 60 peptide DiaPep277 therapy in clinical type I diabetes.. Clin Exp Immunol 152(3):488-97 PMID: 18422727
- 7. O'Neill CL et al.. 2021. Peptide-based supramolecular vaccine systems.. Acta Biomater 133:153-167 PMID: 34010691
- 8. Giugliano D et al.. 1980. Plasma C-peptide response to arginine in insulin-dependent diabetic subjects.. J Endocrinol Invest 3(1):19-23 PMID: 6989887
