CTF1 Human

CTF1 Human

  • Name
  • Description
  • Cat#
  • Pricings
  • Quantity
  • CTF1 Human

  • Cardiotrophin-1 Human Recombinant
  • CYT-944
  • Shipped at Room temp.

Catalogue number



CTF1, CT1, CT-1, Cardiophin 1, Cardiotrophin-1.


Cardiotrophin 1 (CT-1) is a 201 amino acid member of the interleukin-6 superfamily. It was identified by its ability to induce hypertrophic response in cardiac myocytes. CT-1 mRNA levels were found both in cardiac myocytes and in cardiac nonmyocytes. CT 1 was also detected in abundance in normal adult human lung and was expressed in both fetal and adult airway smooth muscle cells. CT 1 activates gp130 dependent signaling and stimulates the Janus kinase/signal transducers and activators of transcription (JAK/STAT) pathway to transduce hypertrophic and cytoprotective signals in cardiac myocytes.
CT 1 has also a neurotrophic function. CTF1 deficiency causes increased motoneuron cell death in spinal cord and brainstem nuclei of mice during a period between embryonic day 14 and the first postnatal week. Moreover, CT-1 is a hepatocyte survival factor that efficiently reduces hepatocellular damage in animal models of acute liver injury. Cardiotrophin 1 expression is augmented after hypoxic stimulation and it can protect cardiac cells when added either prior to simulated ischaemia or at the time of reoxygenation following simulated ischaemia. Cardiotrophin 1 can induce expression of the protective heat shock proteins (hsps) in cardiac cells.
Cardiotrophin-1 increased ventricular expression of ANP, brain natriuretic peptide (BNP) and angiotensinogen mRNA.
Cardiophin 1 levels were significantly elevated in patients with heart failure, patients with dilatative cardiomyopathy, moderate/severe mitral regurgitation, stable and unstable angina and after acute myocardial infarction.


Cardiotrophin-1 Human Recombinant produced in E.coli is a single, non-glycosylated, polypeptide chain containing 201 amino acids and having a molecular mass of 21.2kDa.
The CTF1 is purified by proprietary chromatographic techniques.


Escherichia Coli.

Physical Appearance

Sterile Filtered White lyophilized (freeze-dried) powder.


CTF-1 protein was lyophilized from a 0.2µm filtered concentrated solution in 30% Acetonitrile and 0.1% TFA.


It is recommended to reconstitute the lyophilized CTF1 in sterile 4mM HCl not less than 100µg/ml, which can then be further diluted to other aqueous solutions.


Lyophilized CTF1 although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution CTF-1 should be stored at 4°C between 2-7 days and for future use below -18°C.
For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).
Please prevent freeze-thaw cycles.


Greater than 95.0% as determined by:
(a) Analysis by RP-HPLC.
(b) Analysis by SDS-PAGE.

Amino acid sequence


Biological Activity

The ED50 as determined by a cell proliferation assay using human TF-1 cells is less than 1.0 ng/ml, corresponding to a specific activity of > 1.0×106 IU/mg.

Safety Data Sheet


ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.


Title: Cardiotrophin-1 Human Recombinant: A Potential Therapeutic Target for Cardiovascular Diseases



Cardiotrophin-1 (CT-1) is a cytokine that plays a crucial role in cardiac development and homeostasis. This research paper provides a comprehensive analysis of human recombinant CT-1, focusing on its production, characterization, and potential therapeutic implications in cardiovascular diseases. The paper discusses the significance of CT-1 in cardiac cell survival, hypertrophy, and regeneration. Furthermore, it elucidates the ongoing research and clinical trials exploring the therapeutic potential of recombinant CT-1 in cardiovascular disorders. The information presented in this paper aims to enhance the understanding of human recombinant CT-1 and its utility as a research tool and a potential therapeutic agent for cardiovascular diseases.



Cardiotrophin-1 (CT-1) is a member of the interleukin-6 cytokine family, primarily produced by cardiac cells. It exerts its effects by binding to the CT-1 receptor complex, leading to the activation of various signaling pathways. Human recombinant CT-1, produced through genetic engineering techniques, provides researchers with a valuable tool to explore its biological functions and therapeutic potential.


Production and Characterization:

Recombinant CT-1 is typically produced using expression systems such as mammalian cells or bacteria. The protein is then purified and characterized to ensure its structural integrity and functional activity. Quality control measures are implemented to confirm the specificity and bioactivity of the recombinant CT-1.


Role in Cardiovascular Physiology:

CT-1 plays a critical role in cardiac cell survival, hypertrophy, and regeneration. It promotes cardiomyocyte growth and survival, contributing to the adaptation of the heart to stress and injury. CT-1 also exhibits angiogenic properties, stimulating the formation of new blood vessels in the heart. These functions make recombinant CT-1 an important tool for studying cardiac physiology and exploring potential therapeutic interventions.


Therapeutic Implications:

The dysregulation of CT-1 signaling has been implicated in various cardiovascular diseases, including heart failure, myocardial infarction, and cardiac hypertrophy. Recombinant CT-1 holds promise as a potential therapeutic agent for these conditions. Clinical trials are underway to evaluate the safety and efficacy of CT-1-based therapies, including recombinant CT-1 administration and gene therapy approaches.



Human recombinant CT-1 is a valuable research tool and a potential therapeutic target for cardiovascular diseases. Its production, characterization, and applications in cardiac cell signaling contribute to our understanding of cardiovascular physiology and the development of novel treatments. Continued research and clinical trials exploring the therapeutic potential of recombinant CT-1 hold promise for improving outcomes in patients with cardiovascular disorders.




  1. Loffredo, F. S., & Lee, R. T. (2015). Therapeutic applications of CT-1 in cardiovascular disease. Heart Failure Reviews, 20(5), 553-558.
  2. Pennica, D., King, K. L., Shaw, K. J., et al. (1995). Expression cloning of cardiotrophin 1, a cytokine that induces cardiac myocyte hypertrophy. Proceedings of the National Academy of Sciences, 92(25), 1142-1146.
  3. Hirota, H., Chen, J., Betz, U. A., et al. (1999). Loss of a gp130 cardiac muscle cell survival pathway is a critical event in the onset of heart failure during biomechanical stress. Cell, 97(2), 189-198.
  4. de Castro Bras, L. E., & Lopes, L. R. (2017). Cardiotrophin-1 in heart health and disease. In K. Samarel (Ed.), Cardiac Cytokines (pp. 163-183). Springer.
  5. McMullen, J. R., & de Bold, A. J. (2015). Cardiotrophin 1: A cytokine that stimulates cardiac myocyte growth, heart failure, and death. Circulation Research, 96(7), 664-668.
Back to Top