GO:0043134 regulation of hindgut contraction: Neuropeptide Control, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0043134 regulation of hindgut contraction describes any process that modulates the frequency, rate or extent of muscle contraction of the hindgut, the posterior part of the alimentary canal including the rectum and large intestine.
• Hindgut contraction is regulated by a conserved repertoire of neuropeptides and neurotransmitters, including cardioacceleratory peptide 2 (CAP2), diuretic hormone 31, drosokinin, allatostatin A, neuropeptide F, and FMRFamide-related peptides.
• Serotonergic signaling interacts with central nervous system regulation to modulate hindgut motility, as shown in crayfish.
• Endoderm movements that drive amniote hindgut elongation can be described by chemo-mechanical models, linking tissue-level mechanics to gene regulation.
• Dysregulation of hindgut contraction is relevant to human gastrointestinal motility disorders and metabolic homeostasis, motivating the use of CRISPR-engineered cell and animal models.
• EDITGENE provides knockout, point-mutation, knock-in, overexpression cell models and CRISPR library screening / bioinformatics services to dissect the genes controlling hindgut contraction.
Description
The Gene Ontology term GO:0043134, regulation of hindgut contraction, is defined as any process that modulates the frequency, rate or extent of muscle contraction of the hindgut, the posterior part of the alimentary canal, including the rectum and the large intestine. This biological process is essential for coordinating the transit of luminal contents, water and electrolyte absorption, and waste elimination across diverse animal phyla. Research into this term spans insect neuropeptide physiology, vertebrate developmental mechanics, and human gastrointestinal motility. Understanding how hindgut contraction is regulated at the molecular, cellular and systemic levels provides a framework for identifying therapeutic targets in motility disorders and for building predictive models of gut function. Historically, the regulation of hindgut contraction has been studied most extensively in insects, where identified neuropeptides such as cardioacceleratory peptide 2 (CAP2) and FMRFamide-related peptides directly modulate hindgut muscle activity. In larval Drosophila melanogaster, diuretic hormone 31, drosokinin and allatostatin A alter transepithelial K+ transport and contraction frequency in both midgut and hindgut. In the blood-feeding hemipteran Rhodnius prolixus, neuropeptide F exhibits physiological activity on the hindgut. More recently, serotonergic modulation has been shown to interact with central nervous system regulation of crayfish hindgut motility. In amniotes, chemo-mechanical models of endoderm movements have been developed to explain hindgut elongation, connecting cellular behaviors to tissue-scale contraction and morphogenesis. For researchers, GO:0043134 is a useful annotation target because it captures a physiologically tractable, evolutionarily conserved process that sits at the intersection of neurobiology, endocrinology, developmental biology and gastroenterology. The term enables systematic comparison of regulatory mechanisms across species and supports the design of CRISPR-based experiments to test causality of candidate genes in hindgut contraction.
regulation of hindgut contraction At A Glance
| GO ID | GO:0043134 |
|---|---|
| GO term | regulation of hindgut contraction |
| Ontology | biological_process |
| Synonym | none |
| Major function | Modulation of the frequency, rate or extent of muscle contraction in the hindgut, including rectum and large intestine |
| Anatomical context | Posterior alimentary canal: hindgut, rectum, large intestine |
| Taxonomic scope | Broad; documented in insects, crustaceans, hemipterans and amniotes |
| Representative regulators | CAP2, diuretic hormone 31, drosokinin, allatostatin A, neuropeptide F, FMRFamide-related peptides, serotonin |
| Related physiological outcome | Gut motility, luminal transit, water and ion balance, waste elimination |
What Is GO:0043134?
In plain terms, GO:0043134 regulation of hindgut contraction refers to any biological process that changes how often, how fast, or how strongly the hindgut muscle contracts. The hindgut is the posterior portion of the alimentary canal, encompassing the rectum and the large intestine. Regulation can be neural, hormonal, paracrine or myogenic, and it can act on the frequency, rate or extent of contraction. The term is a biological process annotation and does not itself specify a particular gene, cell type or signaling pathway; instead, it groups all mechanisms that modulate hindgut contractile activity.
Why Is regulation of hindgut contraction Important in Cell Biology?
Regulation of hindgut contraction is important because it directly controls the terminal phase of digestion, ion and water recovery, and defecation. Disruption of this process contributes to gastrointestinal motility disorders, and the underlying neuropeptide and serotonergic mechanisms are conserved enough to inform human biology. Because the hindgut is experimentally accessible in many model organisms, GO:0043134 provides a tractable entry point for causal gene discovery using CRISPR-based perturbations.
• Controls frequency, rate and extent of hindgut muscle contraction, affecting luminal transit and waste elimination.
• Integrates neuropeptide signals such as CAP2, diuretic hormone 31, drosokinin, allatostatin A, neuropeptide F and FMRFamide-related peptides.
• Interfaces with serotonergic and central nervous system regulation of gut motility.
• Relevant to gastrointestinal motility disorders and metabolic homeostasis in translational research.
• Provides a developmental context through chemo-mechanical models of amniote hindgut elongation.
• Offers conserved molecular entry points for comparative physiology across insects, crustaceans and vertebrates.
• Supports CRISPR knockout, point-mutation, knock-in and overexpression studies of candidate regulators.
• Enables library screening and bioinformatics to identify novel modulators of hindgut contraction.
• Useful for building predictive models that link cellular signaling to tissue-level contractile behavior.
• Facilitates identification of therapeutic targets for disorders of gut motility.
What Happens During regulation of hindgut contraction?
Neuropeptide and neurotransmitter signaling
In simple terms: Chemical messengers tell the hindgut muscle when to contract more or less.
The regulation of hindgut contraction begins with signaling molecules that act on the hindgut musculature or its innervation. In Manduca sexta larvae, cardioacceleratory peptide 2 (CAP2) regulates hindgut activity during wandering behaviour. In larval Drosophila melanogaster, diuretic hormone 31, drosokinin and allatostatin A modulate transepithelial K+ transport and contraction frequency in the midgut and hindgut. In Rhodnius prolixus, neuropeptide F shows physiological activity on the hindgut, and in two tenebrionid beetles, FMRFamide-related peptide signaling is involved in the regulation of muscle contractions. These findings establish a conserved neuropeptidergic framework for GO:0043134.
Serotonergic and central nervous system modulation
In simple terms: The brain and serotonin signals fine-tune how the gut contracts.
Beyond local neuropeptides, serotonergic modulation interacts with central nervous system regulation to shape hindgut motility. In crayfish, interactions between CNS regulation and serotonergic modulation of hindgut motility have been characterized, demonstrating that descending and serotonergic inputs converge on the hindgut to adjust contractile output. This layer of regulation is important because it links whole-animal behavioral states to peripheral gut activity.
Ion transport and epithelial coupling
In simple terms: Ion movement across the gut lining helps set the conditions for contraction.
Hindgut contraction does not occur in isolation from epithelial function. In larval Drosophila, diuretic hormone 31, drosokinin and allatostatin A affect transepithelial K+ transport as well as contraction frequency, indicating that ion transport and contractility are co-regulated. This coupling means that regulators of GO:0043134 can act on both the muscle and the transporting epithelium, and that assays should measure both parameters.
Endoderm movements and tissue elongation
In simple terms: During development, the gut tube lengthens through coordinated cell movements.
In amniotes, endoderm movements drive elongation of the hindgut, and chemo-mechanical models have been developed to describe these movements. These models connect cellular behaviors and mechanical forces to the morphogenesis of the posterior gut, providing a quantitative framework that complements physiological studies of contraction. This developmental perspective broadens GO:0043134 from acute motility control to the construction of the hindgut itself.
Integration into gut-centric metabolic homeostasis
In simple terms: The hindgut is part of a whole-body system that manages energy and metabolism.
Regulation of hindgut contraction contributes to a gut-centric model of metabolic homeostasis, in which gut function is integrated with systemic metabolic control. This framing is useful because it positions GO:0043134 within translational research on metabolism and diabetes technology. It also motivates experiments that perturb hindgut regulators and measure systemic metabolic outcomes.
Key Genes Involved in GO:0043134 regulation of hindgut contraction
The following genes and peptides have been experimentally implicated in the regulation of hindgut contraction or closely related hindgut physiology, based on the verified literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| CAP2 (cardioacceleratory peptide 2) | Regulates hindgut activity during wandering behaviour in Manduca sexta larvae | Model peptide for neuropeptidergic control of hindgut contraction |
| Diuretic hormone 31 | Modulates transepithelial K+ transport and contraction frequency in larval Drosophila midgut and hindgut | Links ion transport to contractility |
| Drosokinin | Affects transepithelial K+ transport and contraction frequency in larval Drosophila midgut and hindgut | Neuropeptide regulator of gut motility |
| Allatostatin A | Affects transepithelial K+ transport and contraction frequency in larval Drosophila midgut and hindgut | Inhibitory neuropeptide candidate for contraction control |
| Neuropeptide F | Shows physiological activity on the hindgut of Rhodnius prolixus | Hemipteran model for hindgut regulation |
| FMRFamide-related peptides | Signaling involved in regulation of muscle contractions in two tenebrionid beetles | Conserved myotropic peptide family |
| Serotonin (5-HT) signaling components | Serotonergic modulation of crayfish hindgut motility | Interacts with CNS regulation of hindgut contraction |
| CNS descending inputs | Central nervous system regulation of crayfish hindgut motility | Provides top-down control of hindgut contraction |
| Endoderm movement machinery | Drives elongation of the amniote hindgut | Developmental context for hindgut morphogenesis |
| Chemo-mechanical model components | Describe endoderm movements during hindgut elongation | Quantitative framework for tissue mechanics |
| Gut-centric metabolic regulators | Integrate gut function with metabolic homeostasis | Translational relevance to metabolism |
| Transepithelial K+ transport machinery | Coupled to contraction frequency in Drosophila gut | Epithelial-muscle coupling target |
| Myotropic peptide receptors | Mediate FMRFamide-related peptide effects on muscle contraction | Candidate drug targets |
| Neuropeptide processing enzymes | Generate active peptides such as CAP2 and FMRFamides | Upstream regulators of contraction |
| Serotonergic receptors | Transduce serotonin signals in hindgut | Modulators of motility |
| Ion channel complement of hindgut muscle | Sets excitability and contractile frequency | Electrophysiological target |
| Developmental transcription factors of hindgut endoderm | Pattern the posterior gut during elongation | Link development to adult function |
| Metabolic hormone signaling components | Connect gut-centric homeostasis to systemic metabolism | Translational research target |
How Is regulation of hindgut contraction Regulated?
Regulation of hindgut contraction is itself regulated at multiple levels. Neuropeptides such as CAP2, diuretic hormone 31, drosokinin, allatostatin A, neuropeptide F and FMRFamide-related peptides provide peptidergic control. Serotonergic modulation interacts with central nervous system regulation to adjust hindgut motility. At the epithelial level, transepithelial K+ transport is co-regulated with contraction frequency, indicating coupling between ion balance and contractility. During development, endoderm movements and tissue mechanics shape the hindgut through chemo-mechanical processes. Finally, gut-centric metabolic homeostasis provides a systemic context in which hindgut function is integrated with whole-body metabolism.
regulation of hindgut contraction and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| Neuropeptide F | Hindgut motility regulation | Rhodnius prolixus hindgut assays |
| Diuretic hormone 31 | Ion transport and contraction coupling | Drosophila melanogaster larval gut |
| FMRFamide-related peptides | Muscle contraction regulation | Tenebrionid beetle muscle preparations |
| Serotonergic signaling components | CNS-modulated gut motility | Crayfish hindgut motility assays |
| Endoderm movement machinery | Hindgut elongation and morphogenesis | Amniote hindgut elongation models |
Gastrointestinal motility disorders
Because GO:0043134 controls the frequency, rate and extent of hindgut contraction, its dysregulation is conceptually linked to disorders of gut motility. The neuropeptide and serotonergic mechanisms documented in model organisms provide candidate pathways for investigating human motility dysfunction. Researchers can use these conserved regulators to generate hypotheses about impaired transit and defecation.
Metabolic homeostasis and diabetes technology
A gut-centric model of metabolic homeostasis places hindgut function within systemic metabolic regulation, which is relevant to diabetes research and technology. This connection suggests that regulators of hindgut contraction may influence metabolic outcomes and could be explored as targets in metabolic disease models.
Developmental anomalies of the posterior gut
Endoderm movements drive elongation of the amniote hindgut, and chemo-mechanical models describe how these movements are coordinated. Disruption of these processes could contribute to congenital anomalies of the posterior gut, making developmental regulators of hindgut morphogenesis relevant to pediatric and developmental pathology.
From regulation of hindgut contraction-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Is a candidate neuropeptide required for hindgut contraction? | Knockout cell or animal model with contraction assays |
| Does a specific point mutation alter peptide signaling? | Point-mutation knock-in of the receptor or peptide gene |
| Can a tagged regulator be localized in hindgut tissue? | Tagged knock-in for imaging and proteomics |
| Does overexpression of a regulator increase contraction frequency? | Overexpression cell model with physiological readouts |
| Which genes modulate hindgut contraction in a screen? | CRISPR library screening in a tractable gut model |
| How do endoderm movements shape hindgut elongation? | Chemo-mechanical and developmental models |
How to Study the regulation of hindgut contraction Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Hindgut contraction assay | Frequency, rate and extent of muscle contraction | Testing neuropeptide effects on GO:0043134 |
| Transepithelial ion transport assay | K+ transport across gut epithelium | Coupling ion balance to contraction |
| Serotonergic modulation assay | Effect of serotonin on hindgut motility | CNS-serotonergic interaction studies |
| Chemo-mechanical modeling | Endoderm movement and tissue mechanics | Hindgut elongation analysis |
| CRISPR knockout followed by motility assay | Causal role of a candidate gene | Gene function discovery in hindgut contraction |
| CRISPR point-mutation knock-in | Effect of a specific variant on signaling | Receptor and peptide structure-function studies |
| Overexpression in cell models | Gain-of-function effects on contractile regulators | Pathway activation studies |
| CRISPR library screening with bioinformatics | Identification of novel modulators | High-throughput discovery of GO:0043134 regulators |
Contraction frequency and motility assays
Direct measurement of contraction frequency and amplitude in isolated hindgut preparations is the primary method for studying GO:0043134. Such assays have been used to show that CAP2 regulates hindgut activity in Manduca sexta, that diuretic hormone 31, drosokinin and allatostatin A alter contraction frequency in Drosophila, that neuropeptide F is active on Rhodnius prolixus hindgut, and that FMRFamide-related peptides regulate muscle contractions in beetles. These assays can be combined with CRISPR perturbations to test causality.
Transepithelial ion transport measurements
Because contraction frequency is coupled to transepithelial K+ transport in larval Drosophila, ion transport measurements complement motility assays. This approach reveals whether a regulator acts on the epithelium, the muscle, or both, and helps interpret the physiological consequences of gene perturbation.
Serotonergic and CNS modulation experiments
To capture the interaction between central nervous system regulation and serotonergic modulation, researchers can apply serotonin or manipulate serotonergic pathways while recording hindgut motility, as demonstrated in crayfish. This method is useful for dissecting top-down control of GO:0043134.
Developmental and chemo-mechanical modeling
For the developmental dimension of hindgut regulation, chemo-mechanical models of endoderm movements provide a quantitative framework. These models can be combined with imaging of hindgut elongation to connect cellular behaviors to tissue-scale outcomes.
How CRISPR Can Be Used to Study GO:0043134 regulation of hindgut contraction
Knockout
CRISPR knockout of candidate neuropeptide or receptor genes allows direct testing of whether a regulator is required for hindgut contraction. For example, knocking out genes encoding CAP2-like peptides, diuretic hormone 31, drosokinin, allatostatin A, neuropeptide F or FMRFamide-related peptide signaling components can be followed by contraction assays to quantify loss of function. Knockout models are also useful for testing serotonergic pathway components implicated in CNS-modulated hindgut motility.
Point Mutation
Point-mutation knock-in enables precise interrogation of residues within neuropeptides or their receptors that are predicted to be critical for binding or signaling. By introducing specific amino acid substitutions, researchers can separate effects on contraction frequency from effects on transepithelial ion transport, as both are co-regulated in Drosophila gut. This approach is valuable for validating structure-function hypotheses derived from FMRFamide-related peptide studies.
Knock-in
Tagged knock-in of endogenous regulators allows visualization and biochemical isolation of the tagged protein in hindgut tissue. This is particularly useful for localizing neuropeptides such as CAP2 or neuropeptide F within the hindgut and for determining their sites of action. Knock-in reporters can also be used to monitor expression dynamics during developmental hindgut elongation.
Overexpression
Overexpression models test gain-of-function effects on hindgut contraction. Overexpressing a candidate neuropeptide or receptor can reveal whether increased signaling is sufficient to alter contraction frequency or ion transport. Such models complement knockout studies and help establish bidirectional causality for GO:0043134 regulators.
How EDITGENE Supports regulation of hindgut contraction Research
Researchers studying regulation of hindgut contraction-related genes often need to determine whether a candidate gene is causally involved in modulating contraction frequency, rate or extent, or whether it merely correlates with altered motility. Establishing causality requires precise genetic perturbation combined with physiological readouts such as contraction assays and ion transport measurements. EDITGENE provides the CRISPR tools and bioinformatics support needed to move from candidate gene lists to validated mechanisms.
Contact EDITGENE today to design your custom CRISPR model for regulation of hindgut contraction research.
Frequently Asked Questions About regulation of hindgut contraction
What is GO:0043134 regulation of hindgut contraction?
GO:0043134 is a Gene Ontology biological process term defined as any process that modulates the frequency, rate or extent of muscle contraction of the hindgut, the posterior part of the alimentary canal including the rectum and the large intestine.
What genes are involved in regulation of hindgut contraction?
Genes and peptides implicated include CAP2, diuretic hormone 31, drosokinin, allatostatin A, neuropeptide F, FMRFamide-related peptides and serotonergic signaling components.
Which neuropeptides regulate hindgut contraction in insects?
CAP2 regulates hindgut activity in Manduca sexta larvae, while diuretic hormone 31, drosokinin and allatostatin A modulate contraction frequency in larval Drosophila, and FMRFamide-related peptides regulate muscle contractions in tenebrionid beetles.
How does serotonin affect hindgut contraction?
Serotonergic modulation interacts with central nervous system regulation of crayfish hindgut motility, adjusting contractile output.
Is regulation of hindgut contraction conserved across species?
Documented regulators span crustaceans, insects, hemipterans and amniotes, indicating broad conservation of neuropeptidergic and serotonergic control mechanisms.
How can I study GO:0043134 in the lab?
Common approaches include hindgut contraction assays, transepithelial ion transport measurements, serotonergic modulation experiments, and chemo-mechanical modeling of endoderm movements.
What is the role of ion transport in hindgut contraction?
In larval Drosophila, diuretic hormone 31, drosokinin and allatostatin A affect both transepithelial K+ transport and contraction frequency, showing that ion balance and contractility are co-regulated.
How does hindgut elongation relate to contraction regulation?
Endoderm movements drive elongation of the amniote hindgut, and chemo-mechanical models describe these movements, linking developmental mechanics to hindgut morphogenesis.
Why is regulation of hindgut contraction important for human health?
It is relevant to gastrointestinal motility and to a gut-centric model of metabolic homeostasis, providing a framework for translational research.
Can CRISPR be used to study regulation of hindgut contraction?
Yes. CRISPR knockout, point-mutation, knock-in and overexpression models can be combined with contraction and ion transport assays to test causal roles of candidate genes.
Conclusion
GO:0043134 regulation of hindgut contraction captures a conserved and physiologically important process that integrates neuropeptide signaling, serotonergic and CNS modulation, epithelial ion transport, developmental mechanics and systemic metabolic context. The availability of tractable model systems and precise CRISPR tools makes it feasible to move from correlation to causation for candidate regulators. Researchers can leverage knockout, point-mutation, knock-in, overexpression and library screening approaches to dissect the molecular logic of hindgut contraction control.
References
- 1. Pathak S et al.. 2025. Interactions between CNS regulation and serotonergic modulation of crayfish hindgut motility.. R Soc Open Sci 12(6):250094 PMID: 40535937
- 2. Oikonomou P et al.. 2023. A chemo-mechanical model of endoderm movements driving elongation of the amniote hindgut.. Development 150(22) PMID: 37840469
- 3. Rajagopalan H et al.. 2022. A Gut-Centric Model of Metabolic Homeostasis.. J Diabetes Sci Technol 16(6):1567-1574 PMID: 34697950
- 4. Oikonomou P et al.. 2023. A chemo-mechanical model of endoderm movements driving elongation of the amniote hindgut.. bioRxiv PMID: 37292966
- 5. Tublitz NJ et al.. 1992. Insect cardioactive peptides: regulation of hindgut activity by cardioacceleratory peptide 2 (CAP2) during wandering behaviour in Manduca sexta larvae.. J Exp Biol 165:241-64 PMID: 1588251
- 6. Vanderveken M et al.. 2014. Effects of diuretic hormone 31, drosokinin, and allatostatin A on transepithelial K⁺ transport and contraction frequency in the midgut and hindgut of larval Drosophila melanogaster.. Arch Insect Biochem Physiol 85(2):76-93 PMID: 24408875
- 7. Gonzalez R et al.. 2009. Physiological activity of neuropeptide f on the hindgut of the blood-feeding hemipteran, Rhodnius prolixus.. J Insect Sci 9:1-14 PMID: 20050776
- 8. Marciniak P et al.. 2020. FMRFamide-Related Peptides Signaling Is Involved in the Regulation of Muscle Contractions in Two Tenebrionid Beetles.. Front Physiol 11:456 PMID: 32477164
