Thymosin Alpha-1 (TA1, 10mg vials)

TA-1

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Peptide Partners Manufacturer Id: WF03

Batch Id: TA202602

Research Studies

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Thymosin Alpha 1 Mitigates Cytokine Storm in Blood Cells From Coronavirus Disease 2019 Patients

Title: Thymosin Alpha 1 Mitigates Cytokine Storm in Blood Cells From Coronavirus Disease 2019 Patients

Authors: Claudia Matteucci, Antonella Minutolo, Emanuela Balestrieri, Vita Petrone, Marialaura Fanelli, Vincenzo Malagnino, Marco Ianetta, Alessandro Giovinazzo, Filippo Barreca, Silvia Di Cesare, Patrizia De Marco, Martino Tony Miele, Nicola Toschi, Antonio Mastino, Paola Sinibaldi Vallebona, Sergio Bernardini, Paola Rogliani, Loredana Sarmati, Massimo Andreoni, Sandro Grelli, Enrico Garaci

URL: https://pmc.ncbi.nlm.nih.gov/articles/PMC7798699/

Published: Open Forum Infectious Diseases, Volume 8, Issue 1, January 2021, ofaa588

Blood cells from patients with COVID-19 were analyzed to evaluate the biological processes regulated by thymosin alpha 1 (Tα1) under inflammatory conditions using ex vivo treatment and enrichment pathway analysis. Genes associated with cytokine signaling and production were found to be significantly upregulated in blood cells from COVID-19 patients, consistent with the characteristic cytokine storm observed in severe disease. Ex vivo treatment with Tα1 mitigated cytokine gene expression and specifically inhibited lymphocyte activation in a CD8+ T-cell subset. The study demonstrated that Tα1 interacts with Toll-like receptor (TLR) signaling pathways, including TLR3, TLR4, and TLR9, activating downstream IRF3 and NF-κB signaling to modulate immune cell activity. Tα1 was shown to restore homeostasis of the immune system by reversing T-cell exhaust
htmlion, reducing pro-inflammatory cytokine expression including interleukin-6 (IL-6), and modulating CD38 expression on CD8+ T cells in a manner dependent on disease severity. The findings support the potential role of Tα1 in controlling immune dysregulation and cytokine storm in SARS-CoV-2 infection in vivo.

Plain English Explanation

This research examined how TA-1, a peptide derived from the thymus gland, affects immune cells taken directly from COVID-19 patients. COVID-19 can trigger what’s called a cytokine storm — an out-of-control inflammatory response where immune cells flood the body with signaling chemicals that cause severe tissue damage. The researchers found that when they treated these patient blood cells with TA-1 in the laboratory, the peptide significantly dialed down the overactive immune response, particularly in a type of immune cell called CD8+ T cells. TA-1 essentially helped the immune system find its balance again rather than going into overdrive. These findings help explain why TA-1 has been used clinically to manage COVID-19 in several countries and suggest it works by targeting the key signaling pathways that drive dangerous immune overactivation.

Thymosin α1 Activates Complement Receptor-Mediated Phagocytosis in Human Monocyte-Derived Macrophages

Title: Thymosin α1 Activates Complement Receptor-Mediated Phagocytosis in Human Monocyte-Derived Macrophages

Authors: Annalucia Serafino, Fabrizio Pica, Francesca Andreola, Roberta Gaziano, Nadia Moroni, Gianluca Moroni, Manuela Zonfrillo, Pasquale Pierimarchi, Paola Sinibaldi-Vallebona, Enrico Garaci

URL: https://pmc.ncbi.nlm.nih.gov/articles/PMC6741600/</spa htmln>

Published: Journal of Innate Immunity, 2014; 6(1):72–88

Human monocyte-derived macrophages (MDMs) were exposed to Tα1 in vitro to investigate its effects on innate immune cell activation and pathogen clearance. Tα1-treated MDMs assumed an activated morphology comparable to lipopolysaccharide (LPS)-treated cells but demonstrated a significantly greater ability to internalize fluorescent beads and zymosan particles. Tα1 exposure stimulated MDM phagocytosis and killing of Aspergillus niger conidia in a dose-dependent manner, with effects observable as early as 30 minutes after challenge. The enhanced phagocytic activity occurred through a complement receptor-mediated mechanism, requiring intact microtubule network integrity and protein kinase C activity, with recruitment of vinculin and actin at the phagosome. Crucially, this heightened phagocytic response was coupled with low transcription of pro-inflammatory cytokines tumor necrosis factor alpha (TNFα) and interleukin-6 (IL-6), indicating that Tα1 boosts pathogen clearance without triggering excessive inflammation. The findings demonstrate that Tα1 acts as a potent and early activator of innate immunity while maintaining an anti-inflammatory cytokine profile.

Plain English Explanation

This study looked at how TA-1 affects macrophages — the immune system’s front-line “cleanup crew” responsible for swallowing and destroying pathogens and cellular debris. The researchers found that treating macrophages with TA-1 dramatically increased their ability to engulf and kill fungal particles, with the effect kicking in within just 30 minutes. What makes this particularly notable is that TA-1 accomplished this without triggering the inflammatory chemical signals that normally accompany immune activation — the macrophages became more effective killers while
html simultaneously keeping inflammation low. This dual effect (better pathogen clearance + reduced inflammatory signaling) could explain why TA-1 is considered a balancing or “smart” immune modulator rather than a blunt immune stimulant, making it valuable for situations where immune function needs to be enhanced without causing collateral inflammatory damage.

Thymosin Alpha 1 Alleviates Inflammation and Prevents Infection in Patients with Severe Acute Pancreatitis Through Immune Regulation: A Systematic Review and Meta-Analysis

Title: Thymosin Alpha 1 Alleviates Inflammation and Prevents Infection in Patients with Severe Acute Pancreatitis Through Immune Regulation: A Systematic Review and Meta-Analysis

Authors: Ye Tian, Jie Yao, Yulong Ma, Pengfei Zhang, Xinyi Zhou, Wenlong Xie, Wei Tang

URL: https://pmc.ncbi.nlm.nih.gov/articles/PMC12208829/

Published: Frontiers in Immunology, May 28, 2025; doi: 10.3389/fimmu.2025.1571456

A systematic review and meta-analysis was performed by searching PubMed, Embase, Web of Science, Cochrane Library, and the China National Knowledge Infrastructure (CNKI) through February 2025, identifying five randomized controlled trials comprising 706 patients with severe acute pancreatitis (SAP). Tα1 treatment significantly increased the percentage of CD4+ T cells (mean difference=4.53, 95% CI [3.02, 6.04], P<0.00001) and improved the CD4+/CD8+ ratio (mean difference=0.42, 95% CI [0.26, 0.58], P<0.00001), indicating restoration of immune cell balance. Lower-dose Tα1 significantly reduced C-reactive protein (CRP) levels (mean difference=−30.12 mg/L, 95% CI [−35.75, −24.49], P<0.00001
html), a key marker of systemic inflammation. Tα1 treatment reduced the overall incidence of extrapancreatic infections by 44% (RR=0.56, 95% CI [0.40, 0.78], P=0.0005), with significant reductions in both bloodstream (RR=0.60) and abdominal (RR=0.38) infections. Tα1 also significantly reduced APACHE II scores (mean difference=−1.52, 95% CI [−2.22, −0.83], P<0.0001), a standardized measure of illness severity. These results indicate that Tα1 can regulate immune cell balance, alleviate inflammatory burden, and reduce infectious complications in patients with severe systemic inflammation.

Plain English Explanation

This study pooled data from five separate clinical trials involving 706 patients with severe acute pancreatitis — a life-threatening condition where the pancreas begins attacking itself and triggers a dangerous full-body inflammatory response. The researchers found that patients treated with TA-1 showed meaningful improvements across several measures: their immune cell ratios normalized (indicating better immune balance), their blood levels of C-reactive protein — a standard marker doctors use to measure inflammation — dropped significantly, and their risk of developing dangerous secondary infections fell by nearly half. Patients also scored lower on a standardized medical severity scale, suggesting their overall condition improved more than those who didn’t receive TA-1. This meta-analysis provides some of the strongest clinical evidence that TA-1 can modulate the immune system in real patients facing severe inflammatory conditions, not just in laboratory settings.