P Palthera
Signalling Peptides

VIP

Vasoactive intestinal peptide / Vasoactive intestinal polypeptide

VIP is an 28- discovered in the 1970s. It functions as a neurotransmitter, vasodilator, and immunomodulator. Most published research is mechanistic (cell biology, animal physiology) or focused on VIP-secreting tumours (VIPomas); a smaller body of clinical research has explored VIP and its in pulmonary, inflammatory, and cancer-targeting contexts.

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Abstract reference visual for Signalling Peptides.
Signalling Peptides
Classification
Endogenous 28-residue neuropeptide (Vasoactive Intestinal Peptide)
Research stage
Extensive endogenous-physiology and pathophysiology literature; small clinical trials in pulmonary and inflammatory disease
Sequence
His-Ser-Asp-Ala-Val-Phe-Thr-Asp-Asn-Tyr-Thr-Arg-Leu-Arg-Lys-Gln-Met-Ala-Val-Lys-Lys-Tyr-Leu-Asn-Ser-Ile-Leu-Asn-NH2
Molecular weight
3325.8 Da

Snapshot

Key takeaways

A three-bullet snapshot before reading the full dossier.

  1. 01

    28- with neurotransmitter, vasodilator, and immunomodulatory activity.

  2. 02

    Best characterised pathologically as the secretory product of VIPomas (rare neuroendocrine tumours).

  3. 03

    Synthetic VIP and are investigational in pulmonary, inflammatory, and cancer-targeting research.

Dossier overview

4

research areas

3

references

3

handling notes

01

Mechanism of action

VIP binds the G-protein coupled VPAC1 and VPAC2 (also PAC1 with lower affinity), activating adenylate cyclase and cAMP signalling. Physiological roles include smooth-muscle relaxation, immunomodulation, and circadian regulation.

02

Research applications

  • physiology
  • VIPoma diagnosis and management research
  • Pulmonary and airway research (incl. VIP )
  • Cancer-targeting research (VIP / PACAP as imaging and therapeutic targets)

Evidence at a glance

What's behind this profile

3 citations · 2016–2019

Review
3

Narrative or systematic reviews; no primary data.

Publication years

  1. 16
  2. 17
  3. 18
  4. 19
20162019

Counts are derived from the cited studies below. A study covering both in vivo and in vitro work is counted by its primary model. Sample size is reported in 0 of 3 citations. Findings remain model-specific and are not extrapolated to therapeutic use.

03

Study references

Each profile cites a minimum of two peer-reviewed sources, with model type and reported sample size where the source provides it. Findings are model-specific and must not be extrapolated to therapeutic use.

Vasoactive intestinal peptide / pituitary adenylate cyclase activating polypeptide, and their receptors and cancer

2016

Moody TW et al. · Current Opinion in Endocrinology, Diabetes and Obesity

Model
Narrative review of VIP / PACAP receptor biology and cancer applications
Sample
N/A (review)

Reviewed VPAC1, VPAC2, and PAC1 overexpression in common cancers and the development of VIP-based tumour imaging and targeted-therapy candidates.

PMID 26702849 DOI 10.1097/MED.0000000000000218

Vasoactive Intestinal Peptide-Secreting Tumors: A Review

2019

Siddappa PK et al. · Pancreas

Model
Narrative review of VIPoma diagnosis and management
Sample
N/A (review)

Reviewed VIPomas as rare neuroendocrine tumours causing watery-diarrhoea syndromes and the multimodal approaches used for symptom and tumour control.

PMID 31609932 DOI 10.1097/MPA.0000000000001402

Role of vasoactive intestinal peptide in osteoarthritis

2016

Jiang W et al. · Journal of Biomedical Science

Model
Narrative review of VIP in osteoarthritis pathophysiology
Sample
N/A (review)

Reviewed evidence that VIP down-regulation is associated with increased pro-inflammatory cytokines in osteoarthritic joints, framing VIP and as exploratory therapeutic candidates.

PMID 27553659 DOI 10.1186/s12929-016-0280-1

Evidence caveats

  • VIP has extensive published basic-science literature (>1,500 PubMed records on review/clinical-trial filter alone); the three citations here are clinical-context anchors rather than a comprehensive review.
  • Synthetic VIP is not FDA-approved for any indication. Clinical use is investigational.

04

Storage and handling

Store under controlled laboratory conditions with batch and preparation details recorded.

  • Synthetic VIP is hygroscopic; store under controlled humidity per supplier guidance.
  • Maintain batch and supplier documentation for research reagent use.
  • Research-only inventory; not for human use.