Immune & anti-microbial research

The immunomodulatory research area - thymic and host-defence peptides studied in immune signalling, inflammation and anti-microbial activity.

This research area studies peptides involved in immune regulation and host defence: Thymosin alpha-1 (a thymic peptide studied for immune modulation), LL-37 (a human cathelicidin host-defence peptide studied for anti-microbial and immunomodulatory activity), and KPV (an alpha-MSH fragment studied for anti-inflammatory signalling).

This hub groups the research compounds New-U supplies in this area alongside the on-site guides that summarise the published science.

1 of the 3 compounds in this area has a current published Certificate of Analysis from an independent laboratory, linked on its card below and listed at /coa.

Research compounds in this area

Research reading

kpv peptide fda review 2026

tb 500 thymosin beta 4 research overview

are peptides safe

Explore Immune & anti-microbial research

Per-compound research guides, side-by-side comparisons and current analytical evidence for the compounds studied in this area. Research use only.

Research guide LL-37 research guide LL-37 kills bacteria by disrupting their membranes and simultaneously signals the rest of the innate immune system to show up and finish… Read the guide →

Research guide Thymosin Alpha-1 research guide Thymosin Alpha-1 activates innate immune Toll-like receptors while supporting T-cell maturation, reshaping both arms of the immune system… Read the guide →

Research guide KPV research guide KPV slips into cells through the PepT1 transporter, heads straight to the nucleus, and blocks the inflammatory master switch NF-κB - all… Read the guide →

Analytical evidence View the Thymosin Alpha-1 COA Current batch purity and identity testing, 2026-05-27. View the COA →

Frequently asked questions

What is studied under immunomodulatory peptide research?

Research in this area examines peptides that influence immune signalling, inflammation and host defence - for example Thymosin alpha-1 (immune modulation), LL-37 (a cathelicidin host-defence peptide) and KPV (anti-inflammatory signalling) - in preclinical models. New-U supplies these compounds for laboratory research use only.

What is a host-defence (anti-microbial) peptide?

Host-defence peptides such as LL-37 are short cationic peptides that are part of the innate immune system and are studied for direct anti-microbial activity as well as immunomodulatory roles.

How is purity verified?

Released batches are analysed by independent laboratories (Janoshik Analytical and Freedom Diagnostics) by RP-HPLC for purity and mass spectrometry for identity. Every released sale batch must pass independent verification before it is offered for sale. Published Certificates of Analysis are listed per compound at /coa. In this area, 1 of the 3 compounds has a current published certificate.

Scientific sources & further reading

Thymosin alpha 1 - Wikipedia

Cathelicidin (LL-37) - Wikipedia

Antimicrobial peptides - Wikipedia

Research use only - all claims made on this site are for testing and research use only. This page summarises published research context and does not constitute medical advice or dosing guidance.

PRECISION. PURITY. PERFORMANCE.

Research peptides at >99% HPLC-verified purity, third-party tested by Janoshik Analytical & Freedom Diagnostics, with Certificates of Analysis published per released batch. Supplied strictly for laboratory research use.

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