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Cell culture and assay reagents support cell growth in vitro and the measurement of viability and proliferation. Serum-free media often add hormones such as insulin, hydrocortisone and liothyronine, the active thyroid hormone, together with L-glutamine as a nutrient. Enzymes such as trypsin and hyaluronidase help dissociate adherent cells and tissue fragments. Tetrazolium salts such as MTT and WST-8 report metabolic activity through the formation of a colored formazan. 5-Ethynyl-2'-deoxyuridine (EdU) and 5-bromo-2'-deoxyuridine (BrdU) label newly synthesized DNA in dividing cells. Calcein-AM and propidium iodide distinguish live from dead cells by esterase activity and membrane integrity.
L-Alanyl-L-glutamine is an endogenous metabolite that serves as a dipeptide composed of alanine and glutamine. It exhibits antioxidant properties, reduces inflammation, and has been shown to modulate the heat shock protein response under catabolic conditions. This compound is useful for research applications focused on metabolic regulation and cellular stress responses.
Synonyms: Triiodothyronine hydrochloride; 3,3',5-Triiodo-L-thyronine hydrochloride; T3 hydrochloride
Liothyronine hydrochloride is an active form of thyroid hormone that functions as a selective agonist for thyroid hormone receptors TRα and TRβ. With dissociation constants (Kis) of 2.33 nM for both hTRα and hTRβ, it demonstrates potent biological activity. This compound is utilized in research applications focused on thyroid hormone signaling, metabolism studies, and related endocrine functions.
Synonyms: Collagenase; Type IV
Collagenase IV, derived from Clostridium histolyticum, acts as a zinc peptidase and belongs to the matrix metalloproteinase (MMP) family. This enzyme specifically degrades type IV and type VII collagen, essential components of the basement membrane, while also effectively breaking down elastin and other components of the extracellular matrix. Collagenase IV is widely utilized in research applications involving tissue dissociation, cell isolation, and the study of matrix remodeling processes.
Synonyms: EdU
5-Ethynyl-2'-deoxyuridine (EdU) is a thymidine analogue that serves as a vital tool in cell proliferation studies. This compound can be incorporated into cellular DNA during replication and subsequently reacts with a fluorescent azide through a copper-catalyzed azide-alkyne cycloaddition (CuAAc) “Click” reaction, allowing for advanced imaging techniques. EdU also functions as an alkyl chain-based linker for the synthesis of PROTACs, facilitating targeted protein degradation in research applications. Its unique properties make it essential for investigations in cellular dynamics and innovative therapeutic strategies.
HEPES, a zwitterionic buffer, is widely utilized in cell culture applications due to its ability to maintain stable pH levels in the range of 6.8 to 8.2. This nonvolatile buffering agent plays a significant role in enhancing cellular environments. Additionally, HEPES is recognized for its capacity to induce lysosome biogenesis, making it valuable for studies related to cellular metabolism and organelle dynamics.
XTT Sodium is a tetrazolium dye primarily utilized for assessing cell viability based on redox potential. Actively respiring cells reduce XTT, resulting in the formation of a water-soluble orange-colored formazan product. This reagent is commonly employed in cytotoxicity assays and proliferation studies to quantify cellular metabolic activity.
Synonyms: Iodonitrotetrazolium chloride; p-Iodonitrotetrazolium Violet
INT (Iodonitrotetrazolium chloride) is a biochemical reagent primarily utilized in the colorimetric assessment of cellular metabolic activity and enzyme functionality. This compound serves as an effective electron acceptor, facilitating the reduction process that results in a colored formazan product, allowing for quantification. INT is widely applied in cell viability assays and enzymatic activity studies, making it a valuable tool in biochemical and pharmacological research.
Synonyms: L-Ornithine homopolymer hydrobromide (MW 30000-70000)
Poly-L-ornithine hydrobromide (MW 30000-70000) is a poly-lysine derivative that enhances cell adhesion in culture systems. This reagent forms a positively charged coating on cell culture vessels, providing an optimal matrix environment for cell growth. It is particularly useful for facilitating the primary culture of neurons, including dopaminergic neurons and oligodendrocytes, making it valuable for neurobiological research applications.
HEPES hemisodium salt, 99% (T) serves as an effective buffering agent commonly employed in biological research. Its primary mechanism involves maintaining a stable pH in various laboratory applications, particularly in cell culture and biochemical assays. This reagent is essential for experiments requiring precise pH control, contributing to the reliability and reproducibility of results in studies involving proteins, nucleic acids, and enzymatic reactions.
