directly

Linkers play a necessary role in the physicochemical properties and biological activity of the bifunctional molecule. These linkers are not a simply connection of two functional modules together, but its design and nature directly affect the stability, activity, selectivity, pharmacokinetics, and ultimately the therapeutic efficacy of the entire molecule. The length of the linker determines the extent of interaction between the two ligands and thus the maximum activity of the PROTAC molecule.

MCE has collected 0 PROTAC Linkers can be used for the design and synthesis of bifunctional molecules.

In drug discovery and development (R&D) area, target binding and druggability optimization are core processes. Among these attributes, high solubility is critical for a compound to achieve druggability, as it directly impacts the progress of drug R&D. Superior solubility ensures the rapid dissolution and uniform distribution of drug molecules in vivo, thereby enhancing bioavailability and effectively mitigating issues such as suboptimal efficacy, increased dosage requirements, or exacerbated toxic and side effects arising from insufficient solubility.

From the perspective of medicinal chemistry, high-solubility drug fragments serve as high-quality "molecular building blocks". Based on these fragments, lead compounds with potential druggability can be rapidly screened out, which significantly shortens the drug R&D cycle and reduces R&D costs. Meanwhile, the high-solubility drug fragment library can provide diverse options for drug development in different therapeutic areas, offer solutions for the solubility defects of existing clinical drugs, and facilitate the development of novel, highly effective targeted drugs with higher bioavailability and better safety profiles.

MCE has collected and compiled 2,527 experimentally validated small-molecule fragments with high solubility. These fragments can be directly used for drug molecular design, providing high-quality pre-validated solubility fragments that significantly improve the efficiency of lead compound screening and accelerate the progress of drug R&D.

The composition of endogenous metabolite compounds is affected by the upstream influence of the proteome and genome as well as environmental factors, lifestyle factors, medication, and underlying disease. Therefore, metabolites have been described as proximal reporters of disease because their abundances in biological specimens are often directly related to pathogenic mechanisms. In more recent years, metabolomics approach has been adopted or suggested to be used in various research areas including drug discovery, neurosciences, agriculture, food and nutrition, and environmental sciences.

MCE owns a unique collection of 795 human endogenous metabolites, all of which are derived from human issues. This library is a powerful tool for metabonomics research and metabolism-related drug discovery.

The majority of hypertensive patients have primary (or essential) hypertension, that is, hypertension in which secondary causes are not present. Management aims to control arterial pressure, prevent end-organ damage (cerebrovascular, cardiovascular, and renal), and reduce the risk of premature death.

Antihypertensive drugs may be divided into two broad groups, the first group being those which directly or indirectly block the renin–angiotensin system (RAS), for example, ACEIs, angiotensin receptor antagonists (ARAs), direct renin inhibitors (DRIs), and to a lesser extent β-blockers. The second group of drugs works by increasing water and sodium excretion, thereby reducing intravascular volume, or by causing vasodilatation through non-RAS pathways, for example, diuretics and calcium channel blockers (CCBs).

MCE offers a unique collection of 893 compounds with identified and potential antihypertensive activity. MCE Antihypertensive Compound Library is critical for antihypertensive drug discovery and development.

The endocrine system is a chemical messenger system comprising feedback loops of the hormones released by internal glands of an organism directly into the circulatory system, regulating distant target organs. Hormones are chemicals that serve to communicate between organs and tissues for physiological regulation and behavioral activities. Hormones affect distant cells by binding to specific receptor proteins in the target cell, resulting in a change in cell function.

The endocrine system is concerned with the integration of developmental events proliferation, growth, and differentiation, and the psychological or behavioral activities of metabolism, growth and development, tissue function, sleep, digestion, respiration, excretion, mood, stress, lactation, movement, reproduction, and sensory perception caused by hormones. Irregulated hormone release, inappropriate response to signaling or lack of a gland can lead to endocrine disease.

MCE offers a unique collection of 1,050 endocrinology related compounds targeting varieties of hormone receptors such as thyroid hormone receptor, TSH receptor, GNRH receptor, adrenergic receptor, etc. MCE Endocrinology Compound Library is a useful tool for the discovery of endocrinology drugs.

Extracellular vesicles (EVs) are small membrane binding structures that are released from cells into the surrounding environment and play a crucial role in mediating and regulating intercellular communication related to physiological and pathological processes. EVs are lipid membrane vesicles composed of proteins, lipids, and nucleic acids. EVs can be divided into several types based on their source, such as extracellular vesicles, microcapsules, and apoptotic vesicles. The size range of exosomes is 30-150nm, which are endocrine in multi vesicular endosomes (MVEs); microvesicles (50-1000nm) are secreted directly through extracellular interactions, thereby releasing plasma membrane vesicles. In contrast, apoptotic bodies are usually larger, ranging in size from 1 to 5 μ m. This is generated during programmed cell death. EV plays a crucial role in transmitting information between cells and influencing the behavior and function of receptor cells.

MCE designs a unique collection of 643 small molecules related to extracellular vesicles (EVs). It is a good tool to be used for research on metabolize, cancer and other diseases.

Hormones are a class of biologically active substances secreted by endocrine gland cells, which are transported through the circulatory system to various parts of the body, and precisely act on specific target organs or cells, playing a crucial role in regulating the growth, development, metabolism, and reproduction of organisms. The mechanisms of hormone action are diverse and complex. Some hormones (such as corticosteroids, vitamin D, and thyroid hormones) can enter the cell interior and interact with receptors in the nucleus, thereby regulating gene expression and affecting cell function. Other hormones (such as growth hormone and thyrotropin-releasing hormone) bind directly to receptors on the cell surface, exerting their effects by regulating enzyme activity or influencing the state of ion channels. Additionally, hormones play a key role in the study of endocrine and metabolic diseases, and are closely related to the development of diseases such as diabetes and thyroid diseases.

MCE has included 86 human hormone compounds, which is of great significance for the study of human metabolic pathways, and can also be used to build a metabonomics database.

Cytokines are a kind of low molecular soluble proteins synthesized and secreted by immunogen, mitogen or other factors. They have functions of regulating innate and adaptive immune responses, promoting hematopoiesis, stimulating cell activation, proliferation and differentiation. The process of releasing a large number of cytokines is also called “Cytokine storm”, which can cause damage to many tissues and organs in the body. Cytokine is involved in the pathogenesis of many human diseases, including cancer, diabetes, chronic inflammatory diseases and so on. Cytokine inhibitors are a class of essential compounds that act by directly inhibiting the synthesis and release of cytokine or blocking the binding of cytokine to their receptors. Cytokine inhibitors are important compounds for the study of tumor and autoimmune diseases.

MCE designs a unique collection of 1,332 cytokine inhibitors, mainly targeting the receptor interleukin (IL), colony-stimulating factor (CSF), interferon (IFN), tumor necrosis factor (TNF), growth factor (GF) and chemokine, which is an effective tool for development and research of anti-cancer, anti-chronic inflammatory diseases and anti-autoimmune diseases compounds.

The anti-cancer drug library meticulously collects all drugs approved by FDA and other major national drug regulatory authorities for cancer treatment. These drugs cover a variety of cancer types, including but not limited to lung cancer, breast cancer, colorectal cancer, leukemia, and other common cancers. The library includes a wide range of drugs, from classic chemotherapeutic agents to cutting-edge targeted therapies and immunotherapies. It contains various types of drug compounds with different mechanisms of action. There are cytotoxic drugs that directly kill cancer cells, as well as drugs that work by modulating the tumor microenvironment, inhibiting tumor angiogenesis, and activating the immune system. This diversity provides researchers with a broad range of perspectives and options for intervention strategies.

This library can be used for basic research on cancer treatment, exploring new targets and new mechanisms of drug action; Conducting drug reuse research to look for potential therapeutic effects of existing drugs on other cancer types or diseases; Or conducting research into combination drugs to optimize cancer treatment.

MCE has collected 271 small-molecule compounds with cancer indications, which are good tools for drug repurposing.

Chinese herbal therapy is an important part of Traditional Chinese Medicine (TCM). It has been used for centuries in China, where herbs are considered fundamental therapy for many acute and chronic conditions. Many studies indicated TCM exerted an overall regulatory effect via multi-component and multi-target network. Active components from Traditional Chinese Medicine possess many medicinal properties such as antioxidant, anti-cancer, and anti-bacterial effects, which makes it an important source of new drugs. Nearly 200 modern medicines have been developed either directly or indirectly from the plants used as medicines in China. For example, artemisinin, used in multidrug resistant malaria, was first isolated from the Chinese herb Artemisia annua L. Today, scientists continue to identify compounds in Chinese herbal remedies that may be useful in the development of new therapeutic agents applicable in Western medicine.

MCE designs a unique collection of 3,248 active compounds of Chinese Herbal Medicines. MCE Traditional Chinese Medicine Active Compound Library is a useful tool for discovery new drugs from TCM.

The RNA-targeted bioactive compound library is a high-quality collection of small molecules specifically designed and curated to target RNA structures and functions. It is widely applied in cutting-edge drug discovery and life science research. Unlike traditional strategies that focus on protein targets, RNA-targeted compounds can directly modulate various functional RNA molecules by influencing their splicing, translation, stability, or structural conformation, thereby enabling precise intervention in key biological processes. In the field of drug development, these compounds provide a novel approach to addressing previously “undruggable” targets and have demonstrated significant potential in areas such as oncology, antiviral therapies, and neurodegenerative diseases. For example, by targeting disease-associated RNA structural domains or regulating the aberrant expression of non-coding RNAs, these compounds can effectively inhibit disease progression or restore normal cellular function. In mechanistic studies, RNA-targeted compounds serve as valuable chemical biology tools to elucidate the roles of RNA in gene expression regulation, cellular signaling pathways, and disease development.

The MCE RNA-targeted bioactive compound library contains 857 compounds, sourced from databases such as TargetRX Atlas and R-BIND. The library features excellent structural diversity and biological activity, making it suitable for high-throughput screening (HTS), target validation, phenotypic screening, and lead compound discovery. It represents a valuable resource for RNA-related research and innovative drug development.

Glutamine is an important metabolic fuel that helps rapidly proliferating cells meet the increased demand for ATP, biosynthetic precursors, and reducing agents. Glutamine Metabolism pathway involves the initial deamination of glutamine by glutaminase(GLS), yielding glutamate and ammonia. Glutamate is converted to the TCA cycle intermediate α-ketoglutarate (α-KG) by either glutamate dehydrogenase (GDH) or by the alanine or aspartate transaminases (TAs), to produce both ATP and anabolic carbons for the synthesis of amino acids, nucleotides and lipids. During periods of hypoxia or mitochondrial dysfunction, α-KG can be converted to citrate in a reductive carboxylation reaction catalyzed by IDH2. The newly formed citrate exits the mitochondria where it is used to synthesize fatty acids and amino acids and produce the reducing agent, NADPH.

Cancer cells display an altered metabolic circuitry that is directly regulated by oncogenic mutations and loss of tumor suppressors. Mounting evidence indicates that altered glutamine metabolism in cancer cells has critical roles in supporting macromolecule biosynthesis, regulating signaling pathways, and maintaining redox homeostasis, all of which contribute to cancer cell proliferation and survival. Thus, intervention in glutamine metabolic processes could provide novel approaches to improve cancer treatment.

MCE owns a unique collection of 1,690 compounds targeting the mainly proteins and enzymes involved in glutamine metabolism pathway. Glutamine Metabolism compound library is a useful tool for intervention in glutamine metabolic processes.

G protein-coupled receptors (GPCRs) are membrane proteins in humans and one of the most important targets in drug discovery. Approximately 35% of launched drugs are targeted GPCRs, making them a crucial class of targets in drug discovery.

The orthosteric site of a GPCR is its endogenous ligand’s (such as neurotransmitters or hormones) binding site. This site plays a central role in signal transduction. Small molecules binding to this site typically contain a protonatable amino group, enabling the formation of salt bridges or hydrogen bonds with acidic residues in the binding pocket. In contrast, the allosteric site does not directly initiate signaling but modulates the signal intensity of the GPCR by altering or stabilizing the conformation of the orthosteric site. Small molecules binding to the allosteric site often contain multiple aromatic rings to occupy hydrophobic pockets and achieve their functional effects.

MCE has collected over 7,113 reported bioactive molecules targeting GPCRs, covering Class A, B, and C GPCRs. These small molecules were subjected to AI representation to extract 2D and 3D features. Subsequently, we do screening by AI score based on similarity to identify molecules in diversity library highly similar to the reported bioactive molecules in both 2D and 3D, with a threshold greater than 0.7. Further screening based on cLogP was applied to select molecules with good lipophilicity, which facilitates the binding of small molecules to GPCRs. This diversity library can be widely applied to the discovery of compounds targeting GPCR proteins.

MCE SDS dust-free Powder can be directly prepared into 10% SDS solution, and is widely used for protein denaturation.

MCE PMSF (100×) is a ready-to-use protease inhibitor solution. It can be added directly to lysis buffers at a 1:100 dilution before use.

MCE Oligo (dT)₃₀ Magnetic Beads are designed for the rapid isolation of highly purified, intact mRNA from eukaryotic total RNA or directly from crude extracts of cells, plant and animal tissues.

The 50 bp DNA Marker is provided in a solution of 1× DNA Loading Buffer, which can be directly used for nucleic acid electrophoresis analysis. The 250 μL is defined as the base specification. All larger sizes correspond to incremental volumes of this base.

The 100 bp DNA Marker is provided in a solution of 1× DNA Loading Buffer, which can be directly used for nucleic acid electrophoresis analysis. The 250 μL is defined as the base specification. All larger sizes correspond to incremental volumes of this base.

The 500 bp DNA Marker is provided in a solution of 1× DNA Loading Buffer, which can be directly used for nucleic acid electrophoresis analysis. The 250 μL is defined as the base specification. All larger sizes correspond to incremental volumes of this base.

The 1 kb DNA Marker is provided in a solution of 1× DNA Loading Buffer, which can be directly used for nucleic acid electrophoresis analysis. The 250 μL is defined as the base specification. All larger sizes correspond to incremental volumes of this base.

The 2 kb DNA Marker is provided in a solution of 1× DNA Loading Buffer, which can be directly used for nucleic acid electrophoresis analysis. The 250 μL is defined as the base specification. All larger sizes correspond to incremental volumes of this base.

The 5 kb DNA Marker is provided in a solution of 1× DNA Loading Buffer, which can be directly used for nucleic acid electrophoresis analysis.The 250 μL is defined as the base specification. All larger sizes correspond to incremental volumes of this base.

The 15 kb DNA Marker is provided in a solution of 1× DNA Loading Buffer, which can be directly used for nucleic acid electrophoresis analysis.The 250 μL is defined as the base specification. All larger sizes correspond to incremental volumes of this base.

MCE Agarose With TAE Powder (1%) mainly consists of proportionally mixed agarose and TAE Powder, and can be directly made into 1% agarose gel. The 20 pouches are defined as the base specification. All larger sizes correspond to incremental volumes of this base.

MEM Non-essential Amino Acid Solution (100×) has been filtered and can be used directly. It adds nutrients and reduces the biosynthetic burden on cell in vitro. The 100 mL is defined as the base specification. All larger sizes correspond to incremental volumes of this base.

The 100 bp plus DNA Marker is provided in a solution of 1× DNA Loading Buffer, which can be directly used for nucleic acid electrophoresis analysis. The 250 μL is defined as the base specification. All larger sizes correspond to incremental volumes of this base.

MCE Blood Direct PCR Kit (with Dye) is specifically designed for direct amplification from blood samples. It enables PCR amplification directly from whole blood without the need for conventional DNA extraction and purification steps, thereby significantly simplifying the workflow and improving detection efficiency.

MCE Gentamicin, Sterile (10 mg/mL) is a filtered and sterilized antibiotic solution that can be used directly in cell culture. Gentamicin acts by binding to the 30S subunit of the bacterial ribosome leading to inhibition of protein synthesis and death in susceptible bacteria, mainly for gram-negative and gram-positive bacteria.

MCE Blasticidin S, Sterile (10 mg/mL) is a filtered and sterilized antibiotic solution that can be used directly in cell culture. Blasticidin S is a peptidyl nucleoside antibiotic isolated from Streptomyces griseochromogenes. It acts by blocking hydrolysis of peptidyl-tRNA induced by release factors and inhibits peptide bond formation.

MCE Amphotericin B, Sterile (250 μg/mL) is a filtered and sterilized antibiotic solution that can be used directly in cell culture. Amphotericin B is a polyene antifungal antibiotic produced by Streptomyces nodosus. It can bind with sterols to form transmembrane channels, resulting in the leakage of intracellular substances, thus inhibiting fungal and yeast contamination.

MCE Hygromycin B, Sterile (50 mg/mL) is a filtered and sterilized antibiotic solution that can be used directly in cell culture.Hygromycin B is an aminoglycosidic antibiotic purified from Streptomyces hygroscopicus. It acts by binding to the 70S subunit of the bacterial ribosome and inhibiting protein synthesis, leading to the death of bacteria, fungi and mammalian cells.

MCE Mouse Tissue Lysis Buffer formulated with a highly efficient lysis buffer system, enabling rapid disruption of various mouse tissue samples (e.g., tail, ear, toe, muscle) and efficient release of genomic DNA. The lysate can be directly used as a template in PCR reactions without the need for additional extraction or purification steps, ensuring a simple and streamlined workflow.

MCE 0.25% Trypsin-EDTA (1×), Phenol Red-Free, is prepared by dissolving trypsin powder (a mixture of proteases from porcine pancreas, irradiated and sterilized) and EDTA in a calcium- and magnesium-free balanced salt solution. It is filter-sterilized and can be directly used for the dissociation of cultured cells and tissues. The 100 mL is defined as the base specification. All larger sizes correspond to incremental volumes of this base.

MCE RT Master Mix for qPCR (gDNA digester plus) is a convenient, ready-to-use formulation for reverse transcription and can eliminate genomic DNA (gDNA) contaminations in RNA samples. The cDNA product can be directly applied as a template in a standard PCR and real time quantitative PCR (qPCR). The 100 rxns is defined as the base specification. All larger sizes correspond to incremental volumes of this base.

MCE Mouse Tissue Direct PCR Kit – Pro (with Dye) is specifically designed for direct PCR amplification from tissue samples. It enables rapid, one-step release of genomic DNA from various mouse tissues (such as tail, ear, toe, and muscle), which can be directly used for downstream PCR amplification and analysis without the need for conventional DNA extraction and purification steps, thereby significantly simplifying the experimental workflow.

MCE Mouse Tissue Direct PCR Kit (with Dye) is specifically designed for direct PCR amplification from tissue samples. It enables rapid, one-step release of genomic DNA from various mouse tissues (such as tail, ear, toe, and muscle), which can be directly used for downstream PCR amplification and analysis without the need for conventional DNA extraction and purification steps, thereby significantly simplifying the experimental workflow.

MCE Mouse Tissue Direct PCR Plus Kit is specifically designed for direct PCR amplification from tissue samples. It enables rapid, one-step release of genomic DNA from various mouse tissues (such as tail, ear, toe, and muscle), which can be directly used for downstream PCR amplification and analysis without the need for conventional DNA extraction and purification steps, thereby significantly simplifying the experimental workflow.

MCE Plant Tissue Direct PCR Kit (with Dye) is specifically designed for direct amplification from various plant leaf samples. The kit enables rapid release of genomic DNA from plant tissues (such as rice, maize, tobacco, rapeseed, etc.) in a single step. The resulting lysate can be directly used for downstream PCR amplification without the need for conventional DNA extraction and purification, thereby significantly simplifying the experimental workflow.

MCE Mycoplasma Detection Plus Kit (PCR) employs polymerase chain reaction (PCR) technology for rapid and sensitive detection of mycoplasma contamination in cultured cells and related biological samples. The kit contains a PCR premix and mycoplasma-specific primers designed against conserved regions of the 16S rRNA gene. Cell culture supernatant or cell lysates can be used directly as templates for specific amplification of mycoplasma DNA, enabling rapid identification of mycoplasma contamination.

MCE Animal Tissue Direct PCR Kit (with Dye) is specifically designed for direct amplification from a variety of animal tissue samples. It enables rapid release of genomic DNA from animal tissues (such as insect legs/wings, mouse tails, ears, toes, skin, and internal organs) in a single step, allowing the lysate to be used directly for downstream PCR amplification without the need for conventional DNA extraction and purification procedures, thereby significantly simplifying the workflow.