PNC-27 5mg — Vial Spec, Reconstitution Math & COA

PNC-27 5mg Vial Overview and Catalog Availability

A 5mg vial of PNC-27 contains five milligrams of high-purity, lyophilized peptide powder formulated exclusively for laboratory research use. In cell culture and biochemical assay environments, a 5mg mass unit provides sufficient material for multiple experimental replicates, dilution series, or high-throughput assay screens without requiring excessive reconstitution cycles.

Principal investigators and laboratory technicians typically select 5mg fill sizes when conducting quantitative in vitro cytotoxic assays, membrane permeabelization tracking, or structural interaction studies. Please note that while this guide details technical parameters for the 5mg mass specification, PX1 Research offers a dynamic inventory based on production runs. To verify current batch configurations or purchase active stock, consult our primary PNC-27 product page or browse our complete index via all peptides.

Molecular Structure and Target-Specific Mechanism

PNC-27 is a membrane-active anticancer peptide derived from the p53-binding domain of HDM-2 (human double minute 2 protein) attached to a cell-penetrating peptide signal sequence. Preclinical studies suggest that PNC-27 selectively targets tumor cell membranes by binding to overexpressed, membrane-bound HDM-2 proteins.

Unlike classic apoptosis-inducing molecules that rely on intracellular transcriptional pathways, PNC-27 operates through a rapid physical mechanism. In vitro data indicate that upon binding to membrane-bound HDM-2, the peptide inserts into the lipid bilayer, inducing transmembrane pore formation. This non-pathway-dependent membrane disruption leads to rapid cell lysis (necrosis), operating entirely independent of the intracellular p53 tumor suppressor pathway.

Reconstitution Math for 5mg PNC-27 Vials

Accurate volumetric reconstitution is critical for establishing reliable working concentrations in assay preparations. When reconstituting a 5mg lyophilized cake of PNC-27, researchers can adjust diluent volumes to match required micropipetting ranges. Standard laboratory diluents include sterile bacteriostatic water, sterile normal saline (0.9% NaCl), or cell culture-grade phosphate-buffered saline (PBS).

To achieve a 5 mg/mL solution, add exactly 1.0 mL of diluent to the 5mg vial. At this concentration, each microliter (µL) of solution contains 5 micrograms (µg) of PNC-27 peptide. Adding 2.0 mL of diluent yields a working concentration of 2.5 mg/mL (2.5 µg/µL). Reconstitution with 3.0 mL of diluent results in a final concentration of 1.67 mg/mL (1.67 µg/µL).

For complex dilution schemes or adjusting concentrations to custom assay volumes, utilize our interactive laboratory reconstitution calculator to minimize calculation error before liquid handling.

Aliquot Planning and Liquid Handling Strategy

Lyophilized peptides undergo degradation when subjected to repeated freeze-thaw cycles once reconstituted. For optimal experimental reproducibility, researchers should establish a systematic aliquot planning strategy immediately after reconstitution.

After liquid addition, gently swirl the vial until the lyophilized plug is completely dissolved. Avoid aggressive vortexing or vigorous shaking, which can induce mechanical shear stress and peptide denaturation. Divide the dissolved stock into single-use microcentrifuge tubes according to the planned working assay volumes (e.g., 50 µL or 100 µL aliquots). Flash-freeze aliquots in liquid nitrogen or an ethanol-dry ice bath prior to long-term storage at -20°C or -80°C.

Preclinical and In Vitro Evidence Base

Investigative literature highlights PNC-27's unique affinity for transformed tumor cell membranes compared to non-transformed healthy controls. Preclinical studies suggest that untransformed normal cells do not express HDM-2 on their outer cell membranes, rendering them insensitive to PNC-27 pore formation at equivalent working concentrations.

In vitro assays across various cancer cell lines—including pancreatic carcinoma, breast adenocarcinoma, and leukemia models—demonstrate rapid membrane disruption within minutes of contact. Because the mechanism is transmembrane pore formation rather than nuclear signaling, researchers often utilize PNC-27 as a benchmark compound in membrane-lytic peptide research, as documented across our broader research library.

Comparative Analysis: PNC-27 vs. Class-Related Research Peptides

When designing oncology or cell viability panels, investigators often evaluate PNC-27 alongside related structural and functional analogues. Comparative assays help elucidate differences in target specificity, lytic kinetics, and intracellular transport requirements across distinct amino acid sequences.

For example, PNC-28 is a closely related peptide sequence derived from the same p53 residue region, displaying similar HDM-2 binding characteristics and membrane-active necrotic properties in cancer cell lines. In contrast, compounds such as FOXO4-DRI operate via targeted protein-protein interaction disruption to induce selective apoptosis rather than direct cell lysis. Similarly, natural pore-forming peptides like melittin induce non-selective membrane lysis, lacking the tumor-membrane target specificity mediated by PNC-27's HDM-2 binding domain.

Analytical Verification: Lot-Matched COA and Quality Metrics

PX1 Research enforces strict analytical standards for all catalog items. Each synthesis batch undergoes rigorous testing prior to distribution to verify chemical identity, purity, and freedom from biological contaminants.

High-Performance Liquid Chromatography (HPLC) confirms peptide purity, ensuring a minimum standard of 98%. Mass Spectrometry (MS) verifies exact molecular weight, validating sequence fidelity. Additionally, bacterial endotoxin testing (LAL assay) ensures that residual endotoxins remain well below standard cell culture thresholds. Researchers can inspect lot-matched documentation for their specific fill size via our dedicated COA repository.

Storage Parameters and Stability Guidelines

Proper storage conditions preserve the structural integrity of PNC-27 over extended laboratory storage periods. Lyophilized peptide powder should be stored at -20°C in a desiccated environment protected from light exposure. Under these conditions, the lyophilized peptide remains stable for up to 24 months.

Following reconstitution, liquid stock solutions should be kept at 2°C to 8°C for immediate short-term use (not exceeding 24 to 48 hours). For long-term preservation, reconstituted aliquots must be frozen at -20°C or -80°C. Avoid frost-free freezers, as temperature fluctuations during automatic defrost cycles accelerate peptide degradation.

Selecting the Optimal Vial Size for Lab Workflows

Selecting between a 5mg vial and alternative mass configurations depends on target assay design and throughput requirements. A 5mg format is highly efficient for laboratories conducting initial pilot studies, concentration-curve optimization, or smaller cell culture panels.

For high-throughput screening, multi-plate assays, or large-scale comparative research projects, larger mass packaging or bulk purchasing options may be more economical. Institutional buyers and facility directors can explore high-volume supply arrangements and custom lot sizes through our dedicated wholesale laboratory portal.

PX1 Research Supply Chain and Quality Commitments

PX1 Research operates as a dedicated supplier for scientific institutions, academic research laboratories, and biotechnology organizations across the USA. All research compounds are manufactured under strict ISO 17025 and cGMP-compliant production standards.

Orders are dispatched same-day when placed Monday through Friday, shipping directly from our centralized distribution facilities in California and Arizona. Every package is shipped with lot-matched analytical certificates, ensuring complete traceability and sample integrity from synthesis to laboratory benchtop.