Immune Support Research Guide

PNC-27: Dosage, Benefits & Research Guide

Key Facts

PNC-27 is a immune support research peptide (C188H293N53O44S, MW 4031.7 g/mol). p53-derived peptide for selective cancer cell targeting research. It is supplied as a lyophilized powder for laboratory and in-vitro research use only — not for human consumption.

Classification	p53-derived peptide for selective cancer cell targeting research.
Molecular Formula	C188H293N53O44S
Molecular Weight	4031.7 g/mol
Research Half-Life	Not established in published literature
Form	Lyophilized powder
Research Category	Immune Support

What is PNC-27?

PNC-27 is a synthetic 32-amino acid peptide containing an HDM-2 binding domain derived from the p53 tumor suppressor protein, linked to a cell-penetrating leader sequence. PNC-27 selectively targets cancer cells by binding to HDM-2 (human double minute 2) protein that is aberrantly expressed on the surface membrane of transformed cells but not on normal cells. Upon binding, PNC-27 induces rapid membrane pore formation and necrosis specifically in HDM-2-overexpressing cells, a mechanism distinct from conventional apoptosis-based chemotherapy. Research by Kanovsky et al. (2001) published in Proceedings of the National Academy of Sciences demonstrated that PNC-27 killed a broad spectrum of cancer cell lines, including breast (MCF-7), pancreatic (MIA PaCa-2), and leukemia cells, while leaving normal fibroblasts and epithelial cells completely unharmed at the same concentrations. Subsequent work by Sookraj et al. in Cancer Biology & Therapy showed that PNC-27 induced rapid membranolysis within 10-15 minutes of contact with HDM-2-positive cancer cells, confirming a necrotic rather than apoptotic mechanism. Studies in ovarian cancer models demonstrated efficacy against platinum-resistant cell lines. Compared to conventional chemotherapeutic agents, PNC-27 offers a fundamentally different selectivity mechanism -- targeting a specific membrane protein (HDM-2) rather than general markers of cell division. This distinguishes it from both traditional cytotoxic agents and newer targeted therapies like tyrosine kinase inhibitors. The peptide HAMLET (human alpha-lactalbumin made lethal to tumor cells) shares the concept of selective cancer cell membrane disruption but operates through different binding targets. Store lyophilized PNC-27 at -20°C. Reconstitute with bacteriostatic water and store at 2-8°C, using within 3 weeks. PNC-27 is researched by cancer biologists, oncology researchers investigating selective antitumor agents, and cell membrane biophysicists studying peptide-membrane interactions.

PNC-27 Research Applications

In published and preclinical research, PNC-27 has been studied across the following areas:

Selective cancer cell targeting
HDM-2 binding and membrane pore formation
Breast and pancreatic cancer models
Leukemia and ovarian cancer research

PNC-27 in Research: Reconstitution & Study Concentrations

PNC-27 is supplied as a lyophilized powder. For laboratory research it is reconstituted with bacteriostatic or sterile water; the solvent volume sets the working concentration. Published studies select concentrations specific to the assay or model system — there is no human dose, as PNC-27 is not approved for human use. Researchers should reference the primary literature for the model in question and document the exact lot COA.

Worked example: a 10mg vial reconstituted with 2 mL of bacteriostatic water yields 5.00 mg/mL.

Open the reconstitution calculator

PNC-27 — Frequently Asked Questions

What is PNC-27 and how does it work?

PNC-27 is a synthetic peptide containing an HDM-2 (human double minute-2) binding domain fused to a membranolytic sequence. It works by selectively binding to HDM-2 protein, which is overexpressed on the surface of cancer cells but not normal cells. Upon binding, PNC-27's membranolytic domain forms pores in the cancer cell membrane, leading to selective cytotoxicity. Normal cells, which express HDM-2 intracellularly rather than on their surface, are not affected.

What research has been done on PNC-27?

Research published in Cancer Research and the International Journal of Cancer demonstrated PNC-27's selective toxicity to cancer cells expressing surface HDM-2 while sparing normal cells. Studies showed efficacy against breast cancer (MCF-7), pancreatic cancer (MIA PaCa-2), leukemia, and ovarian cancer cell lines in vitro. Mechanism studies confirmed that PNC-27 forms transmembrane pores specifically in cancer cell membranes through HDM-2 binding-dependent interactions.

How does PNC-27 compare to conventional chemotherapy approaches?

Unlike conventional chemotherapy, which targets rapidly dividing cells regardless of whether they are cancerous or healthy, PNC-27's selectivity depends on surface HDM-2 expression — a feature specific to cancer cells. This selectivity has shown minimal cytotoxicity to normal cells in in-vitro studies. However, PNC-27 research is still preclinical and its in-vivo efficacy, pharmacokinetics, and delivery challenges are active areas of investigation.

What is the recommended reconstitution protocol for PNC-27?

For this 10mg vial, reconstitute with 1mL of bacteriostatic water to yield a concentration of 10.0mg/mL. Inject the water slowly along the inner wall of the vial — do not shake or agitate. Allow the lyophilized powder to dissolve fully (typically 2-5 minutes). Store reconstituted solution at 2-8°C and use within 30 days.

Is PNC-27 legal to buy for research?

PNC-27 is sold in the United States as a research chemical for laboratory and in-vitro use only. It is not approved by the FDA for human use and is not sold for human consumption. Researchers are responsible for compliance with all applicable federal, state, and institutional regulations.

How is PNC-27 reconstituted for research use?

PNC-27 ships as a lyophilized (freeze-dried) powder and is reconstituted with bacteriostatic or sterile water before use in research. The volume of solvent added determines the working concentration — use the Elyte reconstitution calculator to derive the exact concentration for a given vial size and solvent volume.

Does PNC-27 come with a Certificate of Analysis?

Yes. Every batch of PNC-27 from Elyte Peptides ships with a third-party Certificate of Analysis (COA) documenting identity and HPLC purity (≥98%), so research results can be traced to a verified lot.

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